{"id":408432,"date":"2025-02-05T08:08:08","date_gmt":"2025-02-05T08:08:08","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/shell-contacts-penetration-gap-reg\/"},"modified":"2025-02-05T11:08:32","modified_gmt":"2025-02-05T11:08:32","slug":"shell-contacts-penetration-gap-reg","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/shell-contacts-penetration-gap-reg\/","title":{"rendered":"Shell Contacts penetration Gap : reg"},"content":{"rendered":"<p>&lt;p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/02\/05-02-2025-1738742594-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/02\/05-02-2025-1738742610-mceclip1.png\" \/>&lt;\/p&gt;&lt;p&gt;In the contact side, the 4 contact zone are showing high geometric penetration.&lt;br&gt;&lt;br&gt;It is a shell based modelling with layered structure of honeycomb core and facing skin.&lt;br&gt;&lt;br&gt;Contacts are shown in blue in above image.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;How should i make the geometric penetration to zero? I have checked in model. No discrepancy penetration wise.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Following are the warning shown during analysis :&nbsp;&lt;\/p&gt;&lt;div style=&#8221;language: en-IN; line-height: 90%; margin-top: 10.0pt; margin-bottom: 0pt; margin-left: .25in; text-indent: -.25in; text-align: left; direction: ltr; unicode-bidi: embed; mso-line-break-override: none; word-break: normal; punctuation-wrap: hanging;&#8221;&gt;&nbsp;&lt;\/div&gt;&lt;p style=&#8221;line-height: 90%; text-indent: -0.25in; text-align: left; direction: ltr; unicode-bidi: embed; word-break: normal;&#8221;&gt;&lt;span style=&#8221;font-size: 12pt;&#8221;&gt;&lt;span style=&#8221;font-family: Aptos; color: black;&#8221;&gt;One or more MPC or Lagrange Multiplier &lt;\/span&gt;&lt;span style=&#8221;font-family: Aptos; color: black;&#8221;&gt;formulation based&lt;\/span&gt;&lt;span style=&#8221;font-family: Aptos; color: black;&#8221;&gt; contact regions or remote boundary conditions may have conflicts with other applied boundary conditions or other contact or symmetry regions. This may reduce solution accuracy. For MPC based remote points, setting the relaxation method may help eliminate &lt;\/span&gt;&lt;span style=&#8221;font-family: Aptos; color: black;&#8221;&gt;overconstraint&lt;\/span&gt;&lt;span style=&#8221;font-family: Aptos; color: black;&#8221;&gt;. Tip: You may graphically display FE Connections from the Solution Information Object for non-cyclic analysis. Refer to Troubleshooting in the Help System for more details.&lt;\/span&gt;&lt;\/span&gt;&lt;\/p&gt;&lt;p style=&#8221;line-height: 90%; text-indent: -0.25in; text-align: left; direction: ltr; unicode-bidi: embed; word-break: normal;&#8221;&gt;&lt;span style=&#8221;font-size: 12pt;&#8221;&gt;&lt;span style=&#8221;mso-special-format: bullet; font-family: Arial;&#8221;&gt;&bull;&lt;\/span&gt;&lt;span style=&#8221;font-family: Aptos; color: black;&#8221;&gt;One or more Contact Regions have Contact Shell Face or Target Shell Face set to Program Controlled. This can adversely affect performance when writing the input file. Consider displaying element &lt;\/span&gt;&lt;span style=&#8221;font-family: Aptos; color: black;&#8221;&gt;normals&lt;\/span&gt;&lt;span style=&#8221;font-family: Aptos; color: black;&#8221;&gt; and selecting either Top or Bottom shell face.&lt;\/span&gt;&lt;\/span&gt;&lt;span style=&#8221;font-size: 12pt;&#8221;&gt;&lt;span style=&#8221;font-family: Aptos; color: black;&#8221;&gt;&lt;br&gt;&lt;\/span&gt;&lt;\/span&gt;&lt;\/p&gt;&lt;br&gt;&lt;br&gt;See her for more info also:&lt;br&gt;&lt;br&gt;<a href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/shell-contacts-penetration-gap-reg\/\">Shell Contacts penetration Gap : reg<\/a>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-408432","topic","type-topic","status-publish","hentry","topic-tag-ansyscontact-1","topic-tag-geometric-penetration"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27791"],"_bbp_topic_id":["408432"],"_bbp_subscription":["440057","58821"],"_bbp_author_ip":["117.238.234.67"],"_bbp_last_reply_id":["408457"],"_bbp_last_active_id":["408457"],"_bbp_last_active_time":["2025-02-05 11:03:25"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["440057","58821"],"_btv_view_count":["638"],"_bbp_topic_status":["unanswered"],"_edit_last":["58821"],"_bbp_revision_log":["a:1:{i:408459;a:2:{s:6:\"author\";i:58821;s:6:\"reason\";s:0:\"\";}}"]},"test":"tanmay-singhalpiersight-space"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/408432","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":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/408432\/revisions"}],"predecessor-version":[{"id":408459,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/408432\/revisions\/408459"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=408432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}