Model Penetrates Master Surface during compression

Hi,

I am trying to model compression (IMPOSED DISP) of a bead (LAW40) between platens (LAW2) in radioss. Top and bottom contacts are defined using INTER/TYPE7 with the following values (Istf-4, Inacti-6, Iform-2).

There is no penetration at the bottom contact, whereas penetration of bead into the top plate is seen.

Any suggestions to overcome this issue?

Thanks,

Arun

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

Find more posts tagged with

English

Radioss

Accepted answers

All comments

Simon Križnik

Hi,

make sure there are no initial penetrations and intersections.
There are 2 possible reasons for penetrations during the run:
-the edges are not detected because Interface type 7 does not deal with edge to edge impact. Define an additional symmetric type 7 interface or type 11 or 19 interfaces.

-there is a large difference in stiffness between contacting components

5a5755ed896e0_softpart.jpg.129dbc112a7f298c87c3c015678f04e3.jpg

Share the model, if the issue persists.