Maximum number of time increment cutbacks reached,
I am trying to simulate a gear assembly to analyse stress distribution around the gear teeth. It is a non-linear static with contact interaction analysis. I have used Hexmesh for the geometry. After 50% of the simulation, i am getting the error:
*** ERROR # 4965 ***
Maximum number of time increment cutbacks reached,
analysis aborted.
Could anyone please help me with this issues.
I have attached the output file and a presentation for your reference.
Best Answer
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maybe you should review your contact conditions and material data.
Looks like you're getting a really large plastic strain at the interfaces. Do you have any initial penetrations in your contacts?
Just an add comment, you've mentioned 0.2rad/s, but this is a NL static analysis, so this is not exactly over time. 0.2 rad will be applied along the 100% load, and maybe this is too much.
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Altair EmployeeAnswers
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It is difficult to know from the out and images, You should be able to see what is leading to the issue in the h3d?
Are you applying load/moment or displacement/rotation?
If you can share the model we can take a look
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Thank you for the response Paul. I am applying rotation of 0.2rad/s. Sorry, the file size is 199 MB. Is there any other way?
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maybe you should review your contact conditions and material data.
Looks like you're getting a really large plastic strain at the interfaces. Do you have any initial penetrations in your contacts?
Just an add comment, you've mentioned 0.2rad/s, but this is a NL static analysis, so this is not exactly over time. 0.2 rad will be applied along the 100% load, and maybe this is too much.
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Adriano A. Koga_21884 said:
maybe you should review your contact conditions and material data.
Looks like you're getting a really large plastic strain at the interfaces. Do you have any initial penetrations in your contacts?
Just an add comment, you've mentioned 0.2rad/s, but this is a NL static analysis, so this is not exactly over time. 0.2 rad will be applied along the 100% load, and maybe this is too much.
Thank you @Adriano A. Koga for the inputs.
There is no initial penetration in the model. Maybe the rotation is to high. I will reduce it and run the simulation and let you know the results.
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Vikas_21163 said:
Thank you @Adriano A. Koga for the inputs.
There is no initial penetration in the model. Maybe the rotation is to high. I will reduce it and run the simulation and let you know the results.
if you're applying a 0.2 rad rotation in your model, it means ~11 degrees. If your gear assembly is locked, it looks a lot, and probably is causing this over deformation in your model, and thus element distortion.
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Thank you @Adriano A. Koga, your suggestions helped me a lot. I simulated the model at 0.08rad ~5° successfully. The gears almost reached break stress ;-)
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