Contact betweeen solid parts

Altair Forum User

Hello all,

 

I have modeled the parts with hexa penta elements. And rigid tube is used to pull the parts. I want to create contact between the solid elements. I have tried the self contact it is not working. I created the rigid tube as master and others are slave that is also not working. Please help me how to proceed.

Altair Forum User

Hi Arun,

Create a contact surface (csurf) for the solid elements and try defining the contact using the csurf.

If you still face trouble, please share the model through the secure dropbox link available in the signature.

Altair Forum User

Hello George

 

I using hypercrash to model. Please help how to create in hypercrash.

Altair Forum User

Hi Arun,

Please try with Add/Remove a face option in HyperCrash while selecting the master surface.

Altair Forum User

Hi George,

 

Thank you for the reply. I will try it and let you know. One more question my analysis starts with energy error of 99% after some cycle it becomes 0.5% is it normal or do i need to check any thing in the model. I am currently running quasi static simulation which is better AMS or CST.

Altair Forum User

Hi Arun,

An increasing Energy Error that reaches 99% can indicate the simulation has diverged. However, in certain situations high energy error can be acceptable:  If the initial energy in the system is low, then it is possible to have large Energy Errors early in a simulation that reduce as energy is added to the system.

For a quasi static simulation you can try with AMS.