impact on wheel

Altair Forum User

Hello, I am trying to make an analysis of wheel impact on the floor. During the analysis i faced zero volume tetra elements. Masses of the materials were upscaled to run the analysis faster (to be sure it works before letting it run for 9 hours). In my opinion small value in tetra collapse doesn't effect. I attached the model. Thanks in advance.

 

In addition, I searched through forum for the solution and didn't find anything helpful. (added dt/brick/cts, distance in rigid wall, istmr =2, increased thickness to shell elements, increased Gapmin )

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Altair Forum User

update to the model:

 

1) changed the direction of normals in contact.

2) re meshed the tire to quad elements.

3) changed surface of impact to rigid wall

4) redefined contacts with type 7, slave =GRNOD, master =contact surf.

5) checked for any penetration and intersection in the model.

 

still getting warnings in interface and zero volume termination.

 

i think i am still defining small strain formulation wrong. please help me find the issue.

 

i attached all latest files.

<?xml version="1.0" encoding="UTF-8"?>

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