crushing of honeycomb

Altair Forum User

Dear George

 

                      I am trying to simulate crushing of Honeycomb sandwich panel. The speed of the indentor in 25mm/min. I have used Johnson Failure to account for material damage. In this simulation force displacement is asked. I am getting quite high value of Force also  I am not see the cell wall buckling , I am attaching my file for the reference. If possible let me know what is missing in the generated model.

 

Thanks

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Altair Forum User

Hi Rajeev,

The time step imposed (/DT/NODA/CST) in your model is very high and the resulting high mass error is terminating the run. Please reduce the imposed time step value. 

Also, there are many penetrations in the model.

Please find the attached model, which is cleared from penetrations. Impose a fair time step and run the analysis.

 

 

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