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Should initialized DD fields be different for different materials?

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Old   August 25, 2022, 04:48
Default Should initialized DD fields be different for different materials?
Ashish Magar
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I am doing a solids contact simulation using impactBar as a template.

When I am using same material for the complete geometry, I can see the areaContact field is increasing as expected.

However when I am assigning materials to cellZones, the areaContact field remains zero. For both the trials I used the same mesh where there is a contact. The assigned cellzones had density lower that the initial trial of same material throughout.

I had initialized with DD, DD_0, DD_0_0, DD_0_0_0, and the similar D fields same as impactBar tutorial. But only when I am using a homogenous material the contact is solved.

So should I be assigning different DD values for different materials? I understand DD is just V * delT, but I only faced this issue when the material assign are different.
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