TIME STEP LESS OR EQUAL DT MIN FOR SOLID ELEMENTS

Altair Forum User

Hi everybody, 

I'm trying to simulate an head/glass impact.

My intention is to compare the 2D model results with the 3D model ones.

For the 2D model I've used the property P11_SAND with a M27_PLAS_BRIT material and a FAIL_FLD failure mode, and it seems to work.

But I have some problems with the solid model:

- M27 is not compatible with solid elements, so i've used M24_CONC 

- FAIL_FLD in not compatible with M24, so i've used FAIL_TBUTCH

 

No errors or warnings occur during the starter running, but when the simulation starts there are a lot of errors 

TIME STEP LESS OF EQUAL DT  MIN FOR SOLID ELEMENTS.

 

I've seen in the forum that it could be an error in the model, but I can't find it.

 

Someone can help me to find the problem and fix it? 

 

I've uploaded the output files 

 

Kind regards,

Alessio

Unable to find an attachment - read this blog

Altair Forum User

if i were you, i would try to test model without load at first.

then try to use control timestep.

i think elements are much small