{"id":456083,"date":"2026-04-08T20:00:42","date_gmt":"2026-04-08T20:00:42","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problem-with-fast-growing-cells-in-ls-dyna\/"},"modified":"2026-04-08T20:00:42","modified_gmt":"2026-04-08T20:00:42","slug":"problem-with-fast-growing-cells-in-ls-dyna","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problem-with-fast-growing-cells-in-ls-dyna\/","title":{"rendered":"Problem with fast growing cells in LS-Dyna"},"content":{"rendered":"<p>&lt;p&gt;Hello,&lt;\/p&gt;&lt;p&gt;I have created a bumper and a guard-rail. (I have used similar KEYWORDS like in the Yaris test case.)&lt;\/p&gt;&lt;p&gt;In the time step, where the bumper hits the rail. Big, fast growing cells are produced at the bumper (see red circle).&lt;\/p&gt;&lt;p&gt;Is it weak convergence? What can I do?&lt;\/p&gt;&lt;p&gt;My best wishes &amp; Thank you!&lt;\/p&gt;&lt;p&gt;Frank&lt;\/p&gt;&lt;p&gt;<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2026\/04\/08-04-2026-1775678249-mceclip0.png\" width=\"399\" height=\"293\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-456083","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27814"],"_bbp_topic_id":["456083"],"_bbp_author_ip":["134.96.212.81"],"_bbp_last_reply_id":["456111"],"_bbp_last_active_id":["456111"],"_bbp_last_active_time":["2026-04-09 07:26:02"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["320936","13640"],"_btv_view_count":["110"],"_bbp_topic_status":["unanswered"],"_bbp_subscription":["13640"]},"test":"frank-rueckerthtwsaar-de"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/456083","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\/456083\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=456083"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}