{"id":169643,"date":"2022-05-20T13:40:58","date_gmt":"2022-05-20T13:40:58","guid":{"rendered":"\/forum\/forums\/topic\/acceptable-edge-length-to-thickness-ratio-for-deformation-evaluation\/"},"modified":"2022-05-24T12:17:27","modified_gmt":"2022-05-24T12:17:27","slug":"acceptable-edge-length-to-thickness-ratio-for-deformation-evaluation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/acceptable-edge-length-to-thickness-ratio-for-deformation-evaluation\/","title":{"rendered":"Acceptable Edge-Length-to-Thickness-Ratio for deformation evaluation?"},"content":{"rendered":"<p>I&#8217;d like to simulate the deformation of a sheet metal with a large width\/length to thickness ratio, for example this:<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/539\/6JHODAD7JT9W.png\" width=\"969\" height=\"603\" \/><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/063\/0US6XFW1NRAM.png\" width=\"952\" height=\"618\" \/>For fidelity comparison of separate 3D simulations, we consider using different <strong>quadratic <\/strong>element formulations:<br \/>\nSolid elements (1 Layer; Hexaeder dominant)<br \/>\nSolid elements (1 Layer; Tetraeder)<br \/>\n<strong>Shell elements (Quad dominant)<\/strong><br \/>\nSolid-Shell (1 Layer)<br \/>\nNot limited to this problem, but in general:<br \/>\nWhat is a (still) <strong>acceptable Element-Edge-Length-to-Thickness Ratio <\/strong>for each case to not largely deviate from the &#8220;real&#8221; deformation behaviour &#038; magnitude (maybe max. 3 %)? <br \/>\nIs the ratio the same for all quadratic element formulations listed? <br \/>\nBeside &#8220;hard guidelines&#8221;, I would also appreciate, if you shared your experience stating, what you &#8220;feel&#8221; is acceptable.<\/p>\n<p>I have no clue, just a feeling based on not much. <br \/>\n10 to 1 maybe?<br \/>\nHow does this look?<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/503\/LNO1WQYZEIZI.png\" width=\"592\" height=\"406\" \/>Or this?<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/858\/INGUPBJ13PFL.png\" width=\"704\" height=\"494\" \/>Thank you!<\/p>\n","protected":false},"template":"","class_list":["post-169643","topic","type-topic","status-closed","hentry","topic-tag-mechanical","topic-tag-ratio-2","topic-tag-shell-elements"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_btv_view_count":["827"],"_bbp_likes_count":["0"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["169643"],"_bbp_forum_id":["27791"],"_bbp_engagement":["23687","41587"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["215181"],"_bbp_last_active_id":["215181"],"_bbp_last_active_time":["2022-05-24 12:17:27"]},"test":"04d9e8a805def72f86956e64225d4265ef462350"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/169643","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\/169643\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=169643"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}