Problem of contact between pretension
Altair EmployeeAt first I have practiced the pretension and contact in optistruct.
And I used the non-linear quasi static analysis.
This time my problems are when I set the bolt for pretension at it middle face and I set contact between bolt and frame.
Why my bolt will fly away like the photo. ( I use the NLOUT for the iteration h3d file)
My contact setting is like this
Answers
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Hi,
Can you try with SLIDE instead of PCONT?
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But I have coefficient of static and dynamic friction.
And I have read the help of your suggestion, it means
Sliding contact (applied to both open and closed contacts).
I don't really understand what it means.
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Yes, sliding contact can be used for open and closed contact (NO gap)
Try with PARAM>>EXPLRTNL>>CNTSTB and check if this helps?
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@Prakash Pagadala Thanks for your suggestion. It will not fly away.
Sorry about I late to reply to you because I am waiting for the NLOUT result.
I now have a question about my deformation situation. It looks strange.
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@Prakash Pagadala Thanks to your apply.
I am sorry I may not share the file at here but can you message me your email or contact method.
Because I can't message you.
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Hi @LKZ
Yes, I got the files.
BTW, the animation you posted is it from final h3d or from <filename>.nl.h3d?
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Then, I would say wait for the final result. As said before, .nl will only help to monitor non-linear run, but what you see is not the final animation.
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@Prakash Pagadala Thanks to your help.
But at the analysis process, We can see the deformation and the parts are fly away in NLOUT file.
Do you see any mistakes of my model?
Because I have used what I learned to set the model.
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Hi @LKZ
I don't see any broad mistakes in the model.
Did the analysis finish on your end?
Do you see reasonable results are still the problem persists?
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@Prakash Pagadala Thanks to your apply.
The analysis doesn't have this problem. I have solved it.
And most bolts have pretension on the model.
I have updated my new problem just about the convergence problems.
I have posted it at other article.
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