Learning Forum

[javat33489]

Hello everyone.
I am calculating the rubber ELASTOMER from the database.
I am squeezing it between two rings, the rubber itself is also clamped in the pipe.
At some point, the rubber jumps out through the ring and penetrates it strongly, flowing around it:

I am using a standard contact in the workbench:

How can I prevent such a sharp behavior of the rubber? Increase the rigidity in the setting? Please tell me what to do? Thank you.

[Ram Gopisetti]

Hi, 

I suggest adding some cylindrical rigid walls around the rubber to confine it. Set some penalty factors to reduce contact penetration and try defining contact rather than relying on single surface contact as it's not robust. 

Cheers, Ram 

[javat33489]

Sir, I have done many tests and nothing helps.
I have made a test version of a small rubber plate.
Now when I press it by 10 mm, at 8 mm it flies off. I have tried different contacts, I have tried to use BODY INTERACTION - SINGLE_SURFACE, I have tried to assign separate contacts through the Contacts section - there are few settings, I have used CONTACT PROPERTIES. I have gone through all the settings one by one but nothing helps. I have also tried to insert contact maps from the Ls-dyna prepost and also added the CONTROL_CONTACT map and others, nothing works. Sir, tell me how to configure the contact so that the rubber does not jump out?