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Ansys Learning Forum › Forums › Discuss Simulation › LS Dyna › FSI: Error 40746 (SOL+746) information › Reply To: FSI: Error 40746 (SOL+746) information

August 20, 2024 at 8:17 pm
Reno Genest
Ansys Employee

Hello Arnaud,

A crashfront is usually associated with the structure, especially with composite materials. Here is more information from the LS-DYNA Manual Vol II:

"Crashfront elements
are elements that are direct neighbors of failed (deleted) elements."

And *MAT_058 has a crashfront algorithm. Here is more information from the LS-DYNA User Manual Vol II:

"Crashfront. To start the crashfront algorithm, input a value for TSIZE. Note
that the time step size, with element elimination after the actual time step, becomes
smaller than TSIZE"

I would expect the error message to go away when using *MAT_001.

 

Let me know how it goes.

 

Reno.