{"id":453494,"date":"2026-03-01T15:36:53","date_gmt":"2026-03-01T15:36:53","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/failure-negative-volume-when-starting-a-task-in-ls-dyna-workbench\/"},"modified":"2026-03-01T15:36:53","modified_gmt":"2026-03-01T15:36:53","slug":"failure-negative-volume-when-starting-a-task-in-ls-dyna-workbench","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/failure-negative-volume-when-starting-a-task-in-ls-dyna-workbench\/","title":{"rendered":"Failure negative volume when starting a task in LS-Dyna Workbench"},"content":{"rendered":"<p>&lt;p&gt;Hello everyone.&lt;br&gt;Please help.&lt;br&gt;I&#8217;m calculating a rubber cylinder with a cord inside, and the result is a rubber tube.&lt;br&gt;1. I apply 6 MPa pressure to the inner wall of the rubber, and the calculation holds successfully.&lt;br&gt;2. When I set the pressure to 15 MPa, I get &#8220;failure negative volume&#8221; messages immediately after starting. And the calculation goes offline.&lt;\/p&gt;&lt;p&gt;I&#8217;m also using Massscale 5e-7.&lt;\/p&gt;&lt;p&gt;I&#8217;ve tried many solutions: I&#8217;ve refined the mesh, changed the contacts, and changed the section elements. Nothing helps.&lt;\/p&gt;&lt;p&gt;Please help me fix this problem. Thank you.&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-453494","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello everyone.Please help.I&#039;m calculating a rubber cylinder with a cord inside, and the result is a rubber tube.1. I apply 6 MPa pressure to the inner wall of the rubber, and the calculation holds successfully.2. 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