{"id":447419,"date":"2025-11-27T05:06:19","date_gmt":"2025-11-27T05:06:19","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/help-needed-2d-axisymmetric-s-ale-hypervelocity-impact-setup-in-ls-dyna\/"},"modified":"2025-11-27T05:06:19","modified_gmt":"2025-11-27T05:06:19","slug":"help-needed-2d-axisymmetric-s-ale-hypervelocity-impact-setup-in-ls-dyna","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/help-needed-2d-axisymmetric-s-ale-hypervelocity-impact-setup-in-ls-dyna\/","title":{"rendered":"Help Needed: 2D Axisymmetric S-ALE Hypervelocity Impact Setup in LS-DYNA"},"content":{"rendered":"

<p style=”text-align: left;” data-start=”209″ data-end=”221″><span style=”font-size: 12pt;”>Hi everyone,<\/span><\/p><p style=”text-align: left;” data-start=”223″ data-end=”622″><span style=”font-size: 12pt;”>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 <strong data-start=”521″ data-end=”530″>S-ALE<\/strong> approach instead, to better handle large deformations and material advection during impact.<\/span><\/p><p style=”text-align: left;” data-start=”624″ data-end=”838″><span style=”font-size: 12pt;”>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.<\/span><\/p><p style=”text-align: left;” data-start=”840″ data-end=”1151″><span style=”font-size: 12pt;”>I’m attaching my current keyword file and the reference paper. If anyone has experience running <strong data-start=”936″ data-end=”982″>2D axisymmetric S-ALE hypervelocity impact<\/strong> 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.<\/span><\/p><p style=”text-align: left;” data-start=”1153″ data-end=”1172″><span style=”font-size: 12pt;”>Thank you!<\/span><br data-start=”1163″ data-end=”1166″><span style=”font-size: 12pt;”>Amrith<\/span><\/p><p style=”text-align: left;”><span style=”font-size: 12pt;”>Files<\/a><\/span><\/p><\/p>\n","protected":false},"template":"","class_list":["post-447419","topic","type-topic","status-publish","hentry","topic-tag-2d-axisymmetric","topic-tag-ale","topic-tag-ale-formulation","topic-tag-hypervelocity-1","topic-tag-sale-2"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t