{"id":167186,"date":"2023-04-05T14:33:06","date_gmt":"2023-04-05T14:33:06","guid":{"rendered":"\/knowledge\/forums\/topic\/why-is-initial-distance-between-general-edge-edge-contact-vis-gcgen-on-shell-element-perimeters-always-reported-as-a-gap-even-when-the-shell-edges-are-actually-penetrating\/"},"modified":"2023-07-31T12:32:29","modified_gmt":"2023-07-31T12:32:29","slug":"why-is-initial-distance-between-general-edge-edge-contact-vis-gcgen-on-shell-element-perimeters-always-reported-as-a-gap-even-when-the-shell-edges-are-actually-penetrating","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/why-is-initial-distance-between-general-edge-edge-contact-vis-gcgen-on-shell-element-perimeters-always-reported-as-a-gap-even-when-the-shell-edges-are-actually-penetrating\/","title":{"rendered":"Why is initial distance between general edge-edge contact (vis GCGEN) on shell element perimeters always reported as a &#8220;gap&#8221; even when the shell edges are actually penetrating?"},"content":{"rendered":"<p>This is a code limitation.  Code cannot distinguish between gaps and penetrations at the start of the analysis.  To get edge-edge contact (via GCGEN,,,2) to work in such applications, make sure there is a real &#8220;gap&#8221; at start of analysis.  Zero gap or small penetration will not work, regardless of pinball.<\/p>\n","protected":false},"template":"","class_list":["post-167186","topic","type-topic","status-publish","hentry","topic-tag-4391","topic-tag-contact","topic-tag-gcgen","topic-tag-mapdl","topic-tag-mechanical-apdl","topic-tag-modeling-and-meshing","topic-tag-structural-and-thermal","topic-tag-structural-mechanics"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_last_active_time":["5\/4\/2023 20:20"],"_bbp_forum_id":["27795"],"_bbp_author_ip":["209.182.204.162"],"_btv_view_count":["470"],"siebel_km_number":["2053947"],"product_version":["19"],"km_published_date":["2018-04-03T00:00:00.000Z"],"family":["Structural Mechanics"],"application_name":["Mechanical APDL"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/167186","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/167186\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=167186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}