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Release KISSsoft 03/2018
CHANGELOG SERVICE PACK 5
SP5 IMPROVEMENT: STEP export settings can be added in kiss.ini for 3D geometrySTEP export settings can be added in kiss.ini for 3D geometry using Parasolid [STEPEXPORT]STEPUNIT=mmSTEPFORMAT=AP203Available settings for STEPUNIT- mm or millimeters (default), m or meters, cm or centimeters, ft or feet, in or inchesAvailable settings for STEPFORMAT- AP203 (default), AP214
SP5 KISSsoft crashed when adding a gear mesh to the elastic inner ring definitionIn the bearing inner geometry calculation module, adding a gear mesh to the elastic inner ring definition caused KISSsoft to crash.
SP5 Bearing reaction of tapered roller bearings was not zero for zero displacement in selected casesIn some cases, the bearing reaction of tapered roller bearings was small but not zero for an input of zero displacement. This was due to an inaccuracy in an iteration loop.
SP5 Influence from the extension sleeves to the resilience calculation correctedIn the calculation of the resilience of the plates, the length of the extension sleeve was included. This is corrected.
SP5 Siemens NX: Interface to NX 1847Interface to Siemens NX 1847 implemented.
SP5 CAD system addin: if you close KISSsoft the license will be released againIf KISSsoft was opened from the addin in a CAD-system, a KISSsoft license was used.If KISSsoft is closed, the license should be released again. This did not work properly.
SP5 IMPROVEMENT: Curves in the flank line diagram can be savedThe curves in the flank line diagram graphic can be saved now. Either as coordinates in a text file or in the diagram directly.
SP5 Not possible to calculate profile shift for the pinion type cutterIn the user interface in the tab Reference profile, it was not possible to calculate the profile shift for the pinion type cutter. The problem was limited to the planetary gear calculation and 3 and 4 gear chains. This is fixed now.
SP5 Problem with face load factor calculation in modification sizingThe modification sizing tool had a problem with KHb calculation. This happened, if the axis deviation was defined by constant and proportional factors for ISO 6336-1 Annex E calculation. This leads to wrong face load factor results.The results of the LTCA were not affected. This is fixed.
SP5 Problem with importing modifications into tab 'Modifications'Only importing modification sets of the first gear, found with the 'Modifications sizing' dialog, into tab 'Modifications' was possible. This is fixed.
SP5 Convert protuberance angle in tab Tooth formConverting protuberance angle was not working in the tab tooth form for operations 'Generate cylindrical gears with pinion type cutter' and 'Manufacture cylindrical gear with a gear generation process'. This was not working in cases when the normal module in the tab Tooth form was different to the normal module in tab Basic data.
SP5 KHb according ISO6336, annex E: Equivalent linear misalignment of the shaftsCalculation of the 'equivalent' linear misalignment of the shafts: In the special KHb-Report, if the left flank is in contact, the sign of fΣβ was inverted. This is fixed.
SP5 IMPROVEMENT: Additional results in modification sizingThe overlap, total contact ratio under load and sound pressure level according to masuda was added to the result table of modification sizing with contact analysis.
SP5 Problem with flankline modification (via tab 'Modifications') with shaftsThe flankline modification sizing (via tab 'Modifications') with shafts according to ISO6336-1, Annex E, was giving wrong results in some cases. This is fixed.
SP5 Wrong speeds for bevel gear calculations with carrier speed definition from KISSsysWhen creating a differential model in KISSsys, the speed definition of the bevel gears were correctly set in KISSsoft, but wrongly considered for the strength calculation because of the additional carrier speed definition. This is now fixed.
SP5 Problem with face load factor calculation in planetary systemsThe face load factor calculation, according to ISO 6336-1, Annex E, with shafts was giving wrong results starting from the 2nd planet in planetary systems. This is fixed.
SP5 Safety hardened layer according DNV-ruleWhen using duty cycles, the safety SEHT displayed for hardened layer according DNV-rule was the safety of the last bin, not the most critical safety of all bins. This is fixed now.
SP5 End relief I and II information in the user interfaceEnd relief I and II information (LC, rcrown) in the tab Modifications was not correct in case side chamfer was applied. This is fixed. The tooth form itself was not affected!
SP5 Stress graphics in face gear calculationResults shown in stress graphics were not correct in some cases for face gears. This is now fixed.
SP5 Wrong carrier bending line in face load factor calculation and contact analysisThe face load factor calculation, according to ISO 6336-1 , Annex E, and contact analysis was taking the wrong carrier bending line. This is fixed.
SP5 Linear end relief in GDE reportLinear end relief I and II did not show up in the GDE report. This is fixed.
SP5 Varying quality for fp in the operating backlash calculation - DIN toleranceVarying quality for the fp (single pitch deviation) was not considered correctly in the operating backlash calculation ( ΔjF) if DIN quality was selected. This is now fixed.
SP5 IMPROVEMENT: backlash angle added to the worm gear reportBacklash angle j.tsys added to the worm gear calculation report.
SP5 Measuring ball positioning in the graphicsIn some special cases, the measuring ball was not positioned precisely in the normal section of the graphics. This is now fixed.
SP5 Genestar materials (Kuraray): Water absorptionFor genestar materials (from Kuraray) water absorption values were updated from 0.25 to 1.5%. This will change operating backlash results.
SP5 Generate detailed data about profile diagram and tooth form for rackThe module specific setting "Generate detailed data about profile diagram, tooth trace diagram and tooth form" gives an internal error for rack and pinion calculation.Now it's fixed.
SP5 Meshing problems in inner gears with zero external diameter and gears with very big diametersInner gears with zero external diameter and gears with very big diameters could not be meshed. This is now fixed.
SP5 Sizing for flank line modification did not consider iteration settingThe sizing functionality for the flank line modification in the shaft module did not consider the iteration setting.
SP5 Iterative calculation of flank line modification did not support gears with multiple meshesWhen calculating the flank line modification iteratively in a shaft calculation, the gear data was not imported correctly when referencing a gear with multiple meshes.
SP5 Axial roller bearing fixation not considered properly if housing is attached to the inner ringFor the rather rare case where a roller bearing is connected to the housing via the inner instead of the outer ring, the consideration of the fixation and thus pressure angle was not correct.
SP5 Weight of the gear was calculated with dmidThe weight of the gear for the selection 'mounted by interference fit, with stiffness according to ISO 6336-1' was calculated with the middle diameter instead of the pitch diameter.
SP5 Convergence issues when calculating iterative flank line modification in shaft moduleFor some cases, especially with partly loaded face widths, the calculation of the flank line modification in the shaft module did not converge.
SP5 Active tip diameter calculation for splinesIn some cases for splines, where reference profile was set to own input, the active tip diameter dNa was not calculated correctly. This is now fixed.
SP5 cFmin calculation for DIN 5480In some cases, cFmin was not calculated correctly for DIN 5480 splines, which resulted in small error for the calculated dFf. This is now fixed.
SP5 Relaxation of the convergence check in the housing deformation calculation.The convergence check in the housing deformation calculation was very strict, leading to a big calculation time, without a significant increase in the final accuracy. The convergence criterion is now relaxed.
SP5 Change of the gear mesh stiffness of idle gears to zero, in the KISSsys modal analysisIn the modal analysis of KISSsys, idle gears were treated with a constant gear mesh stiffness. Now the gear mesh stiffness of idle gears is set to zero (that is closer to reality).
CHANGELOG SERVICE PACK 4
SP4 NEW! : Calculate bearing performance with SKF bearing moduleIn the bearing calculation (W050, classical method) it is now possible to calculate the rating life of SKF bearings with the cloud based 'SKF bearing module'.In the report you will receive the results according IS0 281 and according to the SKF bearing module.
SP4 The 'addition for plate resilience' will be set to 0 for the calculation with FEM resultsThe 'addition for plate resilience' is not calculated for the configuration 'Proof for bolts with FEM results', the value is set to zero.
SP4 Tooth form not completely closedIn cases when applying flank line modifications, the tooth form at the tip was not completely closed. This is fixed.
SP4 IMPROVEMENT: Curves in the profile diagram can be savedThe curves in the profile diagram graphic can be saved now. Either as coordinates in a text file or in the diagram directly.
SP4 Problem with contact analysis of planetary systems with floating sunThe contact analysis for planetary systems with floating sun was not working correctly and caused wrong results. This is fixed.
SP4 Errors in column list of the results table in the rough and fine sizing1. In the rough and fine sizing, the results tab didn't show the full list of columns and some of the results were missing.2. When the fine sizing is done with the option "With calculation of the transmission error and sizing of profile modification", the modification values were not shown correctly in the results table.
SP4 3D model problem for ZC worm gearsIn some cases, the 3D model of the ZC worm gear could not be generated due to problems in the tooth form calculation. This is now fixed.
SP4 Tip diameter of tool was not transferedFor the ZC profile for worm gear, the tip diameter of the tool was not transferred correctly to the details dialog.
SP4 The protuberance tool for bevel gear was not workingThe protuberance tool for bevel gear was not applied in the 3D model when the option "Constant protuberance along the facewidth" is chosen in the module specific settings.
SP4 Problem in contact analysis with shafts and load spectrumThe contact analysis had errors in cases with shafts, if the load spectrum in tab 'Rating' was set to "Consider load spectrum" and the speed factor of first bin was not 1. This is fixed.
SP4 Problem with contact analysis and face load factor considering load spectrumIn case the last load spectrum bin was causing a change of the flank in contact, right to left flank, the nominal calculation, which is always executed after the load spectrum calculation, was considering the wrong flank. This is fixed.
SP4 Transverse load factor KHa for bevel gearsTransverse load factor KHa for bevel gears was not saved to the file in case it was an user input. This is fixed.
SP4 Normal backlash calculation for cylindrical gearsNormal backlash jn was not calculated correctly for cylindrical gears in case d≠dw. This is fixed.
SP4 Problem with contact analysis considering load spectrumResults of contact analysis with shafts and load spectrum was not matching exactly the results of contact analysis with single bin under same conditions. This issue was caused by a wrong scaling of the mean line load used for calculation of the deflection line. This is fixed.
SP4 Tooth thickness at root (sFn) for racksThe tooth thickness at root (sFn) was not calculated correctly for racks when considering the tooth thickness allowances (like in the VDI 2736). This is now fixed.
SP4 Stability problems of face load factor calculation according to ISO 6336-1, Annex EThe ISO 6336-1, Annex E, face load factor calculation had problems to converge in some cases with shafts, because the bending of the shafts started to oscillate. With this fix, the iteration algorithm is more stable but might lead to slightly different, but more accurate results, and might increase calculation time.
SP4 IMPROVEMENT: Root stresses are added to the contact analysis report for planetary gearsRoot stresses are added to the contact analysis report for planetary gears.
SP4 Root form height for racks with protuberanceIn some cases, the root form height of a rack was not calculated correctly if reference profile was defined with protuberance. This is fixed.
SP4 Calculation of KA according to ISO6336-6, Annex A.3For gear 3 and 4 of gear chains or planetary stages, the calculation of the application factor KA according to ISO6336-6, Annex A.3, was using a wrong value for the slope of the SN curve. This affected only the KA values displayed in the report.
SP4 AGMA factors Y and JAGMA tooth form factor Y and geometry factor J were wrongly calculated when the protuberance tool with final machining stock and/or the pinion type cutter was defined. The deviation was small for spur gears but was relatively big for low overlap helical gears.
SP4 Check, if theoretical tip clearance c >= 0, addedIf the theoretical tip clearance c (calculation without any tolerances) is smaller than zero, than we have a serious input error. An error message is now displayed, but the calculation continues.
SP4 Not possible to set the number of teeth for the pinion type cutterIn the user interface in the tab Reference profile, it was not possible to set number of teeth and the profile shift for the pinion type cutter. The problem was limited to the planetary gear calculation and 3 and 4 gear chains. This is fixed now.
SP4 Geometry manager for internal gear using ISO 21771Geometry manager was not working properly for internal gear if option Geometry according ISO 21771 (for internal gears: center distances and diameter bigger 0) was selected. This is now fixed.
SP4 Number of load cycles in database toolThe number of load cycles of user defined load cycles from the database (in a dat file) was not shown correctly in the user interface. This is fixed now.Note: The calculation was not affected by this problem.
SP4 Path of contact in the planetary meshing graphicsPath of contact was not drawn correctly in the meshing graphics for planet/ring. This is fixed. (The contact analysis results were not affected.)
SP4 Tolerances according to ISO 1328:2013 not shown in the reportIn some cases, the tolerances according to ISO 1328:2013 were not shown in the report. This is now fixed.
SP4 The safety against yield point for the calculation according Kollmann was wrongThe safety against yield point for the calculation according Kollmann was wrong.
SP4 Improvement in the stability and accuracy of the 3D FEM root stress calculation of asymmetric gears.In some cases of asymmetric gears, 3D root stress FEM analysis could not run for higher mesh densities. Very high root stresses were also reported, when the load zone was extended close to the root.
SP4 Correction in the eigenfrequencies calculation for shafts with very small density.Numerical accuracy problems were present in the modal analysis of shafts with almost zero density.
SP4 AGMA 6101/ 6001: Von mises mean stress was wrong in some casesIn the strength calculation method according AGMA 6101/ 6001 the von mises mean stress value was wrong in some cases.
SP4 KISSsoft crashed in rare cases when opening duty cycle dialogWith some older files, it could happen that KISSsoft would crash when the duty cycle dialog in the shaft module was clicked.
SP4 KISSsoft crashed when calculating flank line modification iteratively with multiple gearsWhen calculating the flank line modification, with iteration activated, of two gears, it occasionally happened, that KISSsoft would crash afterwards.
SP4 Shaft model showed invalid warnings when importing data from planetary gear filesWhen importing the gear data from planetary gear files into shaft models, often a warning related to speeds that did not match was shown even though not valid.
SP4 Journal bearing export did not work in shaft moduleWhen trying to export the journal bearings in the shaft module, no files were saved. This is fixed.
SP4 Selecting objects did not work in case shaft element filter was appliedThe element editor did not show the data for a selected object in case shaft element filter was applied and the object was hidden in the tree.
SP4 Background drawing actions improvedMoving the backgound drawing was possible while moving or zooming for shaft elements was active. This did cause strange behaviour. Moving and clearing buttons were active without a loaded drawing.
SP4 Zooming problems in shaft editor fixedThe zoom area in the shaft editor changed after sizing sections, bearings, etc.
SP4 Item context menu was not shown when background drawing is activeThe shaft editor did not show the context menu for a specific items, when a background drawing was loaded. It was always showing the general context menu.
SP4 Flank line modification did not support gears with multiple meshesWhen calculating the flank line modification in a shaft calculation, the gear data was not imported correctly when referencing a gear with multiple meshes.
SP4 Spacewidth for hubsIn some cases, for the hub (with small number of teeth), the spacewidth was incorrectly set to 0. This is fixed.
SP4 Calculate root form circles according to DIN 5480 for flank centered spline shafts if only one reference profile is set to flank centeredThe formula for the root form diameter for flank centered splines according to DIN 5480 is used, if one of the reference profile is flank centered and the other reference profile is own input. So far, the root form diameters for flank centered splines according to DIN 5480 were calculated only if both reference profiles were defined as flank centered.
SP4 Increase of cpu load while KISSsoft interface is opened from KISSsysWhen the user opened the KISSsoft interface from KISSsys, the cpu load increased but it never decreased even if no calculation was performed.
SP4 Coaxial shafts indexes set wrongly after a new shaft is inserted in KISSsysThe indexes of the coaxial shafts were set wrongly in KISSsoft after a new shaft was inserted in KISSsys. This caused that some settings (eg. shaft color) were assigned to the wrong shaft.
SP4 Gear model in the 3D GL Viewer in KISSsysThe cylindrical gear model in the 3D GL viewer in KISSsys was not shown correctly in some cases for internal gears and double helical gears.The tooth form approximation is also improved in general.
CHANGELOG SERVICE PACK 3
SP3 Error message about missing KUI element in Fine-Sizing Graphics removedThe fine sizing for the bearings did show a KUI related error message.
SP3 Solid Edge: Interface to Solid Edge 2019Interface to Solid Edge 2019 implemented
SP3 SolidWorks: Interface to SolidWorks 2019Interface to SolidWorks 2019 implemented
SP3 Tooth root diameter tolerances for worm gearsWhen using option 'Calculation with normal module instead of axial module', the tooth root diameter tolerances were slightly off. This is fixed.
SP3 Helix angle modification, parallel (arc minute) not applied correctlyHelix angle modification, parallel (arc minute) was not applied correctly to the tooth form. The 3D model was affected as well as the contact analysis results.
SP3 Exporting 3D graphics in a DAT fileExporting 3D graphics (Herzian pressure, ...) in a DAT file was mirrored compared to the 3D graphics in KISSsoft (side I<-> side II). This is now fixed.
SP3 Improvement: Face gear shows also effective transverse contact ratioThe effective transverse contact ratio (max, min) (at the middle of the face width) is calculated and documented.
SP3 Kγ according to AGMA 6123-C16The Kγ value by AGMA 6123 for the application level 2 with 6 planets is fixed to 1.44 according to the ERRATA of ANSI/AGMA 6123-C16.The manual will be fixed in next release accordingly.
SP3 Wrong root form diameter, when Helix angle modification with 'Manufacture with βeff' is activatedIn gear calculations with 'Parallel helix angle modification', if the option 'Manufacture with βeff' is activated, for gears with undercut the root form diameter is wrong (not considering the undercut). This is fixed.
SP3 Operating backlash calculation: Proposition for center distance tolerance improvedIn tab Operating backlash calculation: The proposition for center distance tolerance to get zero backlash, shown in the result window, was slightly off. This is improved now.
SP3 AGMA2001-D04: Calculation of KnuAGMA2001-D04: Knu (dynamic factor) is now calculated with vt at operating pitch diameter (before at pitch diameter). Difference is very small. Additionally the formula for vtmax was corrected. Also accuracy of conversion between N and lb was improved in the rpt files.
SP3 KISSsoft bevel gear contact analysis was crashing with shaftsKISSsoft was crashing in some cases when bevel gear contact analysis was used with shafts and the shaft contained a mix of cylindrical and bevel gears.
SP3 Asymmetric modifications on bevel gearsWhen using option "Displaying 2D geometry for inside and outside", tooth form was not correctly calculated if asymmetric modifications were applied. This is now fixed.
SP3 Problem with high H misalignment in bevel gear contact analysisThe bevel gear contact analysis had problems with high H misalignment, which lead to wrong results and graphics in some cases. This is fixed.
SP3 IMPROVEMENT: General improvement of the planetary contact analysis convergence algorithmIn some cases the planetary contact analysis was not able to find a solution for the system. This problem is now handled by a more robust algorithm.
SP3 Tolerances not calculated correctly for DIN3962/3963In some cases (module < 1 mm, ...) tolerances were not calculated correctly for the quality 7 grade of DIN 3962/DIN3963. This is now fixed.
SP3 Helix angle modification (parallel) according to ISO 1328The helix angle modification (parallel) was not applied correctly when1) the option "Use the definition of the helix angle modification (parallel) as a helix slope deviation according to ISO 1328" in the module specific setting is activated and2) the gear is left-hand helical gear.In this case, the modification was applied to opposite direction, that the effective helix angle decreased when the modification is positive. The negative modification had opposite effect. There was no problem for spur gear and right-hand helix helical gear.When you have the above condition, the tooth form was wrong, and thus the 3D model and the contact analysis was wrong.For detailed explanation of the definition of the helix angle modification, please contact to our support (support@KISSsoft.AG) for an instruction (KISSsoft Instruction 117).
SP3 Slightly different results when calculating bevel gear contact analysis twiceThe bevel gear contact analysis with shafts was giving slightly different results when calculating twice. This is fixed.
SP3 Simplified static calculation for plastic gearsIf the flag 'Allow simplified calculation according to DIN/ISO' was set for plastic gears, the values for Rp and Rm were taken from the material DAT files and not from the database.This is now fixed.
SP3 Problem in contact analysis with shafts and internal gearsIn some cases where contact analysis considers the shaft bending line with internal gears, the deflection was causing wrong misalignment in contact analysis. This is fixed.
SP3 Convergence problem with modification sizing of bevel gearsIn cases where modification sizing on bevel gears with shafts and option 'Calculate shaft deformation just once for each partial load' was used, the calculation was not converging. This is fixed.
SP3 Formula for hamc in Bevel Gear Geometry correctedAn error in ISO23509:2017 was found in equation E:215, the term cos(δ) must be deleted. This will be documented in the next edition of the standard.
SP3 Proposition for flank line crowning Cbeta according ISO6336-1In the layout function for Cbeta according ISO6336-1 annex B, we used the rule as written in ISO, that Cbeta must be in the range 10 <= Cbeta <= 50 microns. For small gears of good quality the result was always 10 microns, which was often too much.We changed this now, showing as proposition the real value according of Cbeta, but adding a message that the value is outside the recommended value of 10 <= Cbeta <= 50.
SP3 Multiple definition of topological modificationThe topological modification should be defined only once for each flank and all the redundant topological modifications should be inactivated.However, the program inactivates only the next modification, not all the invalid ones. This is now fixed.
SP3 Face gear bending strength calculation improvedFace gear bending strength calculation, when ISO6336 method is used, will use now the geometry for YF, YS according VDI2737, annex B.This method is more accurate, specially root rounding roF, bending safety will be slightly different.
SP3 Shortcuts for file new and file open did not workThe short cuts for the actions 'New' (Ctrl + N) and 'Open' (Ctrl + O) in menu 'File' did not work.
SP3 Compression springs: Calculation of the diameter expansion was updated to the current standard.Calculation of the diameter expansion was updated to the current standard DIN EN 13906-1:2013. Before the equation according to the older standard was used.
SP3 Add to graphics list did not work in some casesThe function 'Add to graphics list' in the graphic window did add the graphic to the report, but did not show an entry in the list view.
SP3 Some of the comments in the material table were cut offIf a text in the column 'comment' of a gear material table contained the '<' sign, everything from that sign on was cut off.
SP3 Scaling of 3D-Graphics legend was wrong in some casesIn some seldom cases the scaling of the 3D-Graphics legend was wrong, e.g. showed mm instead of mym. This is fixed.
SP3 Error in constact analysis graphic 'Load distribution in the operating pitch circle'The contact analysis graphic "Load distribution in the operating pitch circle" was mirrored between side I and II. This is fixed.
SP3 Saving curves in LTCA diagrams did save section 0For some contact analysis diagrams, saving curves did always save the curve of the first section and not for the current section.
SP3 For shoulders the default smaller diameter was not set correctly (free cross section)The element editor of the free cross section did show the value of the larger diameter of the shaft as a default for the smaller diameter.
SP3 The shaft editor did not show a context menu in the area of the background drawingIf a background drawing was loaded, the shaft editor did not show the default context menu in the area that was filled by this drawing.
SP3 IMPROVEMENT: default diameter of new geometry elements are taken from the previous elementNew outer and inner geomertry elements now start with the same diameter on the left side as the previous element on the right side.
SP3 IMPROVEMENT: automatic zoom for new elementsThe automatic zoom for new elements has been improved and can also be switched off via a flag in the settings.
SP3 Display issue connecting sliding bearing in shaft editorThe symbol of the connecting sliding bearing was not always symetric and has been generally improved.
SP3 Editability and text in the connecting elements table was not correctThe type of bearing was editable but should not be, whereas the shaft inside was not editable but should be. The type of bearing was not displayed for sliding bearings.
SP3 Correction in the unbalance response calculation of shafts with fixed supports.When calculating the unbalance response of shafts with fixed supports, there were some mishandling of fixed support information. This is now corrected.
SP3 Correction in the rigid body modes in the eigenfrequencies calculation.When calculating eigenfrequencies, there were cases where some rigid body modes were either missed, or reported without that they existed.
SP3 Shaft strength was not shown, when no cross sections were definedIn the shaft strength graphics, the utilization of the shaft was only shown in case that a cross sections were defined.
SP3 Connection bearing color in Shaft EditorWhen the "Display critical bearing" setting is selected, the supports and general connections are now displayed with the color "yellow" (default) instead of "green" (above required lifetime). The control for critical bearings is performed only for rolling bearings and connecting rolling bearings.
SP3 Shaft models with duty cycles crashed occasionally during calculationFor shaft models that contained duty cycles it occasionally happened, that the calculation would crash without further notice.
SP3 Older shaft models with cross sections defined occasionally crashedFor some older shaft models, it could happen that the calculation crashed for some particular definitions of cross sections.
SP3 Shaft calculation showed 'converged' with Not-a-Number (NaN) resultsIn some rare cases, a shaft calculation might not converge due to numerical instabilities and can return Not-a-Number results. This situation was not properly detected and KISSsoft show an error that the model did not converge.
SP3 KISSsoft crashed in rare cases when selecting 3D view of shaftFor some specific models created with KISSsys, it could happen that selecting the 3D view of a shaft in the shaft editor caused KISSsoft to crash.
SP3 Shaft calculation raised internal error when used with duty cycles and classic bearingsShaft models with duty cycles and bearing types, where inner geometry calculation is not available, showed an internal error.
SP3 Shaft model showed invalid warningsFor some shaft calculations, misleading warning messages from intermediate calculation iteration steps were shown.
SP3 Internal error when using 2013 shaft solver with journal bearingsThe 2013 shaft solver does not support the journal bearing. This was not detected properly and the calculation produced an internal error.
SP3 Shaft calculation raised internal error after deleting shaft referenced by a connecting elementWhen deleting a shaft that was referenced in a connecting element, the calculation raised an internal error afterwards.
SP3 Bearing diameter change according DIN 7190-1:2017Until now the bearing diameter change because of the roughness was calculated with the formula 0.8*(RzA+RzI). According to DIN 7190-1:2017 the factor is 0.4 instead of 0.8.This change has influence on the tolerances of the bearing.
SP3 The depth of 'own input' feather keys was not read correctlyIf you used an 'own input' for a feather key as sub element in the shaft editor, the depth wasn't read out correctly from the surface.
SP3 Convert effective tooth thickness dialogueConvert effective tooth thickness allowance for Hubs was not working correctly using the setting 'Geometry according to ISO 21771' (for internal gears: center distance and diameter > 0). This is now fixed.
SP3 Tooth thickness documentation in the splines reportIn some special cases when reference diameter was near to root form diameter, the tooth thickness was wrongly set to 0. This is now fixed.
SP3 DIN 5480: minimum root diameter for the shaft was not calculated correctlyThe root diameter tolerance for the shaft according DIN 5480-1 table 5 was not calculated correctly, the result for the minimum root diameter was slightly wrong.
CHANGELOG SERVICE PACK 2
SP2 License check for non-linear stiffness in reportWhen having module WA1 activated, the non-linear stiffness was not printed in the report. This is fixed.
SP2 Wrong pressure angle in inner geometry bearing reportIn the report of the inner geometry bearing calculation module, the pressure angle was shown in radians instead of degree.
SP2 Pretension force graphic fixedThe pretension force graphic doesn't shown the correct lines for different friction coefficients.
SP2 Siemens NX: cutout a toothing on a existing shaft is not always workingThe cutout of a toothing on a existing shaft does not always work, if the normal vector of the area, which is selected, is not exactly 0 (main axis, absolute positioning).We fixed, the normal vector can now be in a range of +/- 0.000001.
SP2 Contact analysis results shown on the toothIn some cases (overlap ratio eps_b>1.9 or helix angle > 15° and accuracy of calculation not set to own input), the contact analysis results were not displayed correctly on the tooth (the calculation results were OK though). This is now fixed.
SP2 IMPROVEMENT: root fatigue data added Sabic Verton RVL29 and Delrin 311DPRoot fatigue data at 150°C was added for Sabic Verton RVL29 material.Root fatigue data at 20°C and 50°C added for DuPont Delrin 311DP.
SP2 Root form diameter calculation for pinion of the face gear calculationIn some cases with protuberance, the root form diameter of the pinion in a face gear pair was slightly wrong. This is now fixed.
SP2 Tooth thickness calculation at the reference diameterIn cases, when the reference diameter was not between tip form and root form diameter (for instance high profile shift), the calculated tooth thicknesses in the report were not correct. In such cases, a special warning is displayed in the report and values are now set to 0.
SP2 Contact and flash temperature graphicsIn cases when z1>z2, the graphics for contact and flash temperature were not correctly displayed on the x-axis (the calculated temperatures were correct). This is now fixed.
SP2 Small speed handling in duty cycles of planetary stagesVery small speeds (below 0.0001 rpm) defined in duty cycles were creating an error message, which was repeated too often. Such speed bin's are now handled correctly.
SP2 IMPROVEMENT: eccentric and shortened profile crowning calculationUntil now, eccentric and shortened profile crowning were calculated using diameters. To make it consistent with other modifications, eccentric and shortened profile crowning are now calculated using roll length. Some minor changes in the tooth form are expected. The definition of Factor 1 and Factor 2 did not change.
SP2 Display of the worn-out tooth formIn some cases (unequal facewidth) the worn-out tooth form was not shown properly in the graphics. This is now fixed.
SP2 Specific sliding graphicsIn some cases (dNa <> dFa), curves for specific sliding were shown also outside of the path of contact. This is now fixed.
SP2 Problem with gear body stiffness matrix in LTCA-/KHb-CalculationThe contact analysis and face load factor calculation did not consider axial forces and transformed the deflection results into path of contact layer correctly when stiffness matrix is used from gear body calculation. This is fixed.
SP2 Checking condition for fine sizing of crossed helical gearIn the fine sizing of crossed helical gear, the iteration doesn't proceed when the maximum limit is smaller than the minimum limit and the step is not activated for center distance range.This is fixed.
SP2 Shearing safety factor according to the VDI 2736-3 (worm gears)Shearing safety factor was not calculated anymore for crossed helical worms according VDI 2736-3. This is fixed.
SP2 Torsion direction setting in 'Axis alignment' dialog was empty after modification sizingThe torque direction, set in 'Axis alignment' dialog tab 'Torsion', was overwritten with a wrong value after using modification sizing dialog in tab 'Modifications'. This is fixed.
SP2 The 'remove modification' button was not workingThe remove modification button was not working correctly in the tab Modifications. This is fixed.
SP2 Curvature radius was not calculated through COM-InterfaceCurvature radius was not calculated while running contact analysis step wise through COM-Interface. Therefore Hertzian pressure was not calculated. This is fixed.
SP2 Calculation of relevant root relief Cf for Scoring and MicropittingCalculation of relevant root relief Cf was not working correctly (the
value was set to 0). Therefore, the relevant tip relief Ceq according
ISO6336-20, annex B, considered only the tip relief Ca. For gears having
only root relief, but no tip relief, the safeties for scoring and
micropitting were calculated as for gears without any modification.
SP2 KISSsoft was crashing while exporting gear pairs from planetary systemsKISSsoft was crashing while trying to export sun/planet or planet/rim gear pair calculations from planetary system calculations. This is fixed.
SP2 Fine sizing with Flag 'Operating profile shift' set, is using wrong tip diameterIn Fine sizing, when the Flag 'Operating profile shift' is set, in some cases the a different tip diameter is used. Therefore profile overlap ratio etc was different, when a variant is loaded into the main window.
SP2 IMPROVEMENT: Gear/Shaft suppress plausibility checkIMPROVEMENT: The "Gear/Shaft suppress plausibility check" flag is now suppressing all gear/shaft related checks, such as sense of rotation, weight direction, coupling torque (carrier), etc.
SP2 Circumferential backlash for crossed helical gearsThe circumferential backlash was not calculated and displayed correctly in the Tab tolerances for crossed helical gears. This is now fixed.
SP2 Tolerances AGMA2015-2-B15 errorWhen 'Variying qualities' is activated, then the tolerances fidT and FidTaccording AGMA2015-2-B15 were printed according the next lower tolerance level. This is fixed.
SP2 Contact analysis was crashing with too high pitch errorThe contact analysis was crashing in cases of too low torque compared to pitch error which is causing empty results. This is fixed.
SP2 Torque layoutThe calculation of the transmittable torque was not working at all. This is fixed.
SP2 IMPROVEMENT: modality of help and info dialogsThe sub dialogs for help texts and info pictures where modal and therefore they had to be closed before data could be entered in the original dialog. As it is useful to have the help text or info picture open while entering data, these dialogs are now nonmodal.
SP2 IMPROVEMENT: Minor layout issues fixed when french language is usedIn some cases in french language, comboboxes did not show full text width even if there was enough space.
SP2 Copy-Paste in 2D graphics did not workCopying a 2D graphic with Ctrl+C did not work at all.
SP2 Material data: Emodul and alpha for ASTM cast iron were wrongFor the materials ASTM A536 (cast iron) and ASTM A48 (cast iron) the values for the young's modulus E and the coefficient of thermal expansion alpha were wrong.
SP2 Calculation of tooth thickness at root (sFn)Tooth thickness at root (sFn) for the root strength calculation was not correct in some special cases (pre-manufacturing with machining stock bigger than the protuberance of the tool). This is now fixed.
SP2 Exporting tooth trace and profile diagramWhen exporting tooth trace and profile diagram as points, flanks were switched. This is fixed.
SP2 Inverted contact pattern graphic in bevel gear contact analysisThe results in contact pattern graphic of bevel gear contact analysis was inverted, the data of the outside was shown at the inside. This is fixed.
SP2 Wrong x axis values of excitation force graphicThe x axis values of the excitation force graphic was wrong, this is fixed.
SP2 Improvement: Bending stress in root area is now showing the situation global occurring maximum root stress positionThe "Bending stress in root area" 3D graphic is now showing the data related to the meshing position when the absolute maximum root stress on the gear occurs. Before the graphic was showing everywhere the maximum along the face width which neglects the information that these results are not appearing at the same meshing position.
SP2 dsFn value of asymmetric gearsIn the FEM root stress calculation of asymmetric gears, the dsFn value of the right flank was always used. This is now corrected and the dsFn value of the left flank is used when needed.
SP2 Correction in the diameters reported from 2D FEM root stress calculation of helical gearsIn the 2D FEM root stress calculation of helical gears, the diameters reported referred to the equivalent spur gear. This is now corrected and they refer to the initial helical gear.
SP2 Fit-in-view did not always work in shaft editorFit in view did not work correctly for files without oil level in those cases where the priviously loaded file contained an oil level.
SP2 Added bearing frequencies to the bearing inner geometry reportAs an improvement, the bearing frequencies were added to the bearing inner geometry report.
SP2 FKM: The manufacturing process of the keyway had no influenceThe manufacturing process of the keyway had no influence in the strength calculation according FKM, for the other calculation methods is this input doesn't used.In the strength calculation always the manufacturing process 'end milling cutter' was taken.
SP2 Limited life calculation wasn't possible with AGMA 6001/6101For the limited life strength we calculate now a life factor ke. For the infinite life strength the factor ke is =1.Until now it wasn't possible to calculate limited life strength according AGMA.
SP2 Service life factor protocol not found in case project contains no roller bearingsFor shaft projects that contained no roller bearings, creating the service life factor report caused only a message that protocol "W050-H1.tmp" was not found. With the fix, a warning 'Cannot display "ClassicLifetimeFactors" report: The project does not contain any roller bearings' is shown.
SP2 3D Viewer - Increased torque arc arrow sizeThe size of the torque arc arrow to show the torque in the 3D viewer was very small in some graphics.
SP2 Shaft sizing did not work for shafts with general supportsThe shaft sizing function silently failed in case no rolling bearings but general supports were present.
SP2 Splines according DIN 5482 were not fully documented in the reportSplines according DIN 5482 were not fully documented in the general and in the manufacturing data report.
SP2 Modal Analysis calculation errorSome models including gears with multiple contacts were producing errors while running the Modal Analysis calculation.
CHANGELOG SERVICE PACK 1
SP1 Values in bearing DB were rounded to integerFor some db columns, the values were rounded to integer instead of keeping them as floating point. This could cause some deviations for very small bearings where the rounding error was relevant.
SP1 Inner geometry approximation for needle cagesIn many cases the inner geometry approximation for needle cages did not work and resulted in very unrealistic values for the the number of rolling bodies and roller length. With this fix, the estimation based on C and C0 is now very accurate and robust.
SP1 Autodesk Inventor: Interface to Autodesk Inventor 2019Interface to Autodesk Inventor 2019 implemented.
SP1 Improvement: Retrieve number of members in dynamic arrays via COMIt is now possible to get the number of members in a dynamic array via a COM call to the size() function of the variable.Example: GetVar("shafts.result.bending.size()")
SP1 Non-circular gearsIn some cases for non-circular gears, error message appeared stating that the file for the operating pitch line of gear 2 doesn't exist. This is now fixed.
SP1 Excitation force calculation deactivated for stepwise contact analysis over COM-InterfaceThe excitation foce calculation was wrongly activated for stepwise contact analysis calculation over COM-Interface. This was setting results to 0 and is now fixed.
SP1 Planetary system contact analysis was overwriting face load factor resultsThe planetary system contact analysis was overwriting face load factor results according to ISO 6336-1, Annex E. This is fixed.
SP1 Load spectrum selection switched to own inputThe load spectrum switched to own input after changing the reference gear for planetrary gears.
SP1 Modification for mold makingThe points in the root area of the gears in the operation of modification for mold making were not calculated correctly. This is now fixed.The calculated tooth form is now slightly different in the root area.
SP1 Ball diameter for worm gearsIn some cases for worm gears (high tooth thickness tolerances, tooth thickness modification factor xs<>0), the theoretical measuring ball diameter was not calculated correctly. This is now fixed.
SP1 Contact analysis had changing resultsContact analysis with nominal load and shafts had sometimes changing results. This is fixed.
SP1 Proportional axis misalignment of planetary system problemProportional axis misalignment of planetary system was calculated with the wrong carrier torque in case of ISO 6336-1 Annex E calculation with load spectrum. This is now fixed.
SP1 Calculation example CylGearPair5 changedThe calculation method for example CylGearPair5 was changed from VDI 2545 (YF method B) to VDI 2545 modified (YF method B).
SP1 Sizing power and torque for asymmetric gearsSizing functionality for power and torque did not work properly for asymmetric gears. This is fixed.
SP1 Modification sizing was crashing for planetary systemsModification sizing of planetary systems with contact analysis was crashing, this is fixed.
SP1 Improvement: Proposition for optimum profile shift x for scuffing according AGMA925When any AGMA rating method is selected, the scuffing is calculated according AGMA 925 and is also used in the profile shift proposition tool.AGMA925 shows as result the scuffing probability. According the standard, if the probability is smaller 5%, then <= 5% must be shown.Therefore in the layout function for best profile shift x often the result was 5%, therefor not really showing the best value.We changed this and use now the lowest contact temperature thBMax to find the optimum profile shift.
SP1 Occasional crashes during startup of KISSsoftOn some machines, KISSsoft crashed occasionally during startup. This is fixed.
SP1 Modification sizing had problems showing resultsModification sizing with ISO 6336-1, Annex E, was not showing results correctly and not able to transfer solution into tab modifications. This is fixed.
SP1 Icon for KISSsoft User Interface help added to the toolbarThe icon was only available for internal users.
SP1 Database tool base material searchThe search function did not work for the column base material in the material tables in the database tool.
SP1 KUI help did not work in dialogsQuestion mark for KUI help added to the title bar of all dynamic dialogs.
SP1 Contact analysis had problem with unequal facewidthSeveral contact analysis graphics had problems while calculating gears with unequal facewidth. This is fixed now.
SP1 Too high maximum stress in some cases of root stress calculation using 3D FEM.The area on the tooth surface used for the calculation of the maximum stress of 3D root stress FEM was for some cases falling inside the load zone, giving very high stresses. This is now fixed.
SP1 Optimization of the mesh generation for 3D root stress FEM, reduce run-time.The size of the generated 3D FEM mesh is reduced without affecting the accuracy of the results. The calculation time is reduced.
SP1 Layout of element editor for sectionsThe layout of the element editor for sections and documentation points is improved.
SP1 Fixed drawing artefacts for gear body in shaft editorWhen using a stiffness matrix for the gear body, the drawing in the shaft editor showed line artefacts for some configurations.
SP1 Context menu in shaft editorIn some cases, the general context menu was shown for a shaft element instead of the element specific context menu.
SP1 Oil level in shaft editorThe indicator for the oil level was changing its width when the diameter of an element was changed.
SP1 Element editor update issueA change in the element position was not considered in the calculation if
the calculation button was pressed right after entering the value in the
SP1 IMPROVEMENT: Zoom position in shaft editor changedWhen zooming with the mouse wheel in the shaft editor, the center point of the zoom is the current mouse position not anymore the center of the editor.
SP1 IMPROVEMENT: Zoom level in shaft editorThe zoom level in the shaft editor remains the same when switching between tabs.
SP1 Connecting support (joint) positioned at edge position of a shaftWhen a connecting support (joint) was positioned at the left edge position of a shaft, the torque balance was not calculated properly.
SP1 Campbell diagram lines were mixed in some problems.The lines of the Campbell diagram were mixed in some models, due to wrong characterization of the respective eigenmodes. This is now fixed.
SP1 Custom bearing diametersWhen a shaft calculation was saved with a custom bearing and opened again
on an instance where this bearing is not in the DB, the
selected diameter was not shown properly.
SP1 Wrong material properties used for calculation of operating bearing clearanceThe calculation for the operating bearing clearance did use wrong material properties (inner ring properties for inner shaft and vice versa).
SP1 M02b-M02e: values for support factor fs according DIN 6892:2012The values for the support factor fs were in KISSsoft according Niemann, we actualized this, now the values are according DIN 6892:2012.
SP1 Spline calculation stopped workingIn some cases for splines with low number of teeth (<11) and profile
shift exactly 0.05, the calculation stopped working. This is now fixed.
SP1 Wrong text in ANSI table fixedEven if the ANSI table was showing Normal Diametral Pitch correctly, the text was set to normal module.
SP1 KISSsys desktop linkage was not workingThe KISSsys desktop linkage was not working because of missing working directory. This is fixed.
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