Contact Forces split up
Altair EmployeeHi guys,
I am currently trying to solve a problem with my 3 point bending setup. I designed a hybrid composite structure with 3D elemtents as core and 2D elems as Laminate. To apply the load I have modelled a 2D Impactor which moves down and translates the forces into the laminate via contacts. (MORIENT: Norm, S2S, TRACK: finite)
Everything works fine exept my results... if I view the contact forces Optistruct would give me the result as shown in the picture.
<?xml version="1.0" encoding="UTF-8"?>
Has anyone had this problem before?
I have already tried using CNTSTB and defining the SRCHDIS. Changing Master and Slave or N2S and S2S did not help either. At some values the two lines of contact forces would move closer to each other but never close enough.
Greetings from Germany
Lars
Answers
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Hi,
Can you try with MORIENT OPENGAP and check if that helps.
If you still face the same issue, please share the model file. Please use the file transfer link in my signature to share the model file
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Hi Prakash,
I have tried OPENGAP and it won't calculate anymore because of the finite contact definition.
I have sent you the file yesterday. Thank you for your help!
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Hi @L.Fenger
I received the file, thank you.
Let me check the results and will get back to you with my findings.
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Hi Prakash,
I don't want to seem unpatient but have you checked the model?
Greetings
Lars
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Hi Lars,
Sorry for a late turn around,
This looks strange to me as well. I am checking with one of our expert and I will share their feedback with you soon.
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Hi @L.Fenger
Please see the image below. Replaced RBE3 with RBE2 and PCONT with slide.
The solution didn't converge but takes upto 99.8% load. Maybe you should constraint the stampel in all directions except loading direction.
<?xml version="1.0" encoding="UTF-8"?>
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