Error when using mechanica in assembly with contact regions

[willblatt]

I'm doing an analysis on an assembly that involves 6 parts. The load is axial and only applies directly to three of them. The other 3 are rings which secure the assembly. When I run the analysis I continue to get an error that say the contact regions create a crack region. Is there anyway to get around this? I can provide the files if anyone has any ideas.



View attachment 137

 

[KurtStark]

I think you don't need the rings for the analysis. If the force is axial, there is no force on the ring. Taking them off helps perhaps.

I also have a problem with contact creating crack between volumes, but didn't found whats wrong.

 

[KurtStark]

perhaps this link helps:

http://www.tsdengineering.com/pages/asm_contact_crack.html#Anchor

 

[Luis Aguirre]

If you are not able to resolve the problem with Kurt's solution please send me the model and I will troubleshoot it.





Luis

 

[huynht98]

I'm doing an analysis on an assembly that involves 6 parts. The load is axial and only applies directly to three of them. The other 3 are rings which secure the assembly. When I run the analysis I continue to get an error that say the contact regions create a crack region. Is there anyway to get around this? I can provide the files if anyone has any ideas.


This is HUYNHT98 post:



I have an assembly that has 4 parts and I used Ansys Workbench it worked fine. Then I ran the same Assembly with the same constraints & loads in ProMechanica then I have the error that say the contact regions create a crack between 2 volumes. Then I add more contacts to around adjacent chamfers and rounds then It takes care the crack regions between 2 volumes but it did notrun in ProMechanica for long. It tells me that I have a Fatal Errors and It never passes the pass # 1in ProMechanica. I think everyone has problem with contact analysis in ProMechanica.
View attachment 545

Edited by: huynht98

 

[huynht98]

Ihave an assembly that has 4 parts and I used Ansys Workbench it worked fine. Then I ran the same Assembly with the same constraints & loads in ProMechanica then I have the error that say the contact regions create a crack between 2 volumes. Then I add more contacts to around adjacent chamfers and rounds then It takes care the crack regions between 2 volumes but it did notrun in ProMechanica for long. It tells me thatI have a Fatal Errors and It never pass the pass # 1 in ProMechanica. I think everyone has problem with contact analysis in ProMechanica.

Edited by: huynht98