{"id":456827,"date":"2026-04-21T10:30:50","date_gmt":"2026-04-21T10:30:50","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/forging-simulation-with-efg\/"},"modified":"2026-04-21T10:30:50","modified_gmt":"2026-04-21T10:30:50","slug":"forging-simulation-with-efg","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/forging-simulation-with-efg\/","title":{"rendered":"Forging simulation with EFG"},"content":{"rendered":"<p>&lt;div&gt;Hello, I am running a cold forging simulation in LS-DYNA using the implicit solver, and I am experiencing a sudden solver termination before the end time.&lt;br&gt;The workpiece is modeled using the EFG (Element-Free Galerkin) formulation (elform 42). At a certain stage of the forming stroke the solver stops abruptly due to negative volume error.&nbsp;I would like advice on which aspects of my model setup should be improved or reconsidered in order to solve the issue. I can post here some of the keywords I use: <img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/04\/21-04-2026-1776767341-mceclip0.png\" \/> &nbsp;&lt;\/div&gt;<\/p>\n","protected":false},"template":"","class_list":["post-456827","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27814"],"_bbp_topic_id":["456827"],"_bbp_subscription":["676676","471944","480261"],"_bbp_author_ip":["193.3.10.231"],"_bbp_last_reply_id":["456922"],"_bbp_last_active_id":["456922"],"_bbp_last_active_time":["2026-04-22 17:37:00"],"_bbp_reply_count":["6"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["3"],"_bbp_engagement":["676676","471944","480261"],"_btv_view_count":["95"],"_bbp_topic_status":["unanswered"]},"test":"ecerongrundfos-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/456827","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/456827\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=456827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}