Ale Material Indentation Model

Altair Forum User

Dear Sir,

 

I am facing a problem with a material indentation problem with Radioss. The Simulation crashes due to negative volume in the element. Please could you check as to where i am going wrong?

 

Regards,

Praveen

Unable to find an attachment - read this blog

Altair Forum User

Hi Praveen,

 

DId you check RADIOSS help?

 

This is mainly due to high deformation of solid meshes. Fully-integrated brick elements are especially affected by this problem which may be caused by a bad interface behavior or bad material definitions. In any case, the use of co-rotational formulation is recommended to avoid bad shear deformation response.

 

add /DT/BRICK/CST and check if that helps.

Altair Forum User

Hi Prakash,

 

tried with the /DT/BRICK/CST  card, the simulation crashes with the same error! I have attached the picsf(mysimulation.jpg) along with the message! I am not sure as to what changes i need to make in the model such that I can simuate this results (Expected results.jpg)

Altair Forum User

Hi @praveen.sridhar1991

 

I will check and get back to you soon,

Altair Forum User

Dear Prakash,

 

any updates on the ALE Model?

 

Regards,

Praveen

Altair Forum User

Hi @praveen.sridhar1991

 

I couldn't able to solve it myself as solid are have much better for ALE,

 

I am checking with Experts on the same and will get back to you soon,

Altair Forum User

Hi @roybudha

 

Can you try with type 18 contact instead of type 9 and check if that helps?