Learning Forum

[hope1]

 I am attempting to replicate the experiments from the paper (10.1002/adem.201700059) using LSDYNA, but I have encountered a bottleneck. When modeling the composite density matrix/fiber structure of EPS40/120, I consistently run into the issue of negative volume. I have already tried several material models: MAT63 (no error reported, but the experimental results do not match at all), MAT83 (negative volume error), MAT142 (negative volume error), and MAT126 (negative volume error).（ *** Warning 40630 (SOL+630)
     negative volume in solid element # 2620544 cycle 197 time= 1.8696E-05）

[Nanda]

Hello User,

Have you tried the general guidelines to handle negative volume error?
Strategies to Overcoming Negative Volume Calculations

Regards,

Nanda.

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