Learning Forum

[Amrith Mariappan]

Hi everyone,

I’m working on a 2D axisymmetric hypervelocity impact simulation in LS-DYNA. I used LS-PrePost to build the keyword file. The setup is based on the attached reference paper, where the authors use a fully Lagrangian formulation for both projectile and target. However, I would like to implement an S-ALE approach instead, to better handle large deformations and material advection during impact.

I’ve reviewed multiple S-ALE example decks and adjusted my input accordingly, but I keep encountering errors related to the ALE control and coupling definitions. I have attempted several variations with no success.

I’m attaching my current keyword file and the reference paper. If anyone has experience running 2D axisymmetric S-ALE hypervelocity impact models in LS-DYNA and could point me toward the correct control cards, coupling setup, or best practices for this type of problem, I’d greatly appreciate your guidance.

Thank you!
Amrith

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[Ashish Khemka]

Hello,

Ansys Employees cannot answer this query. Please wait for other forum members to chime in.

Regards,

Ashish Khemka