{"id":429111,"date":"2025-04-16T08:49:51","date_gmt":"2025-04-16T08:49:51","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/convergence-in-contact-debonding\/"},"modified":"2025-04-16T08:49:51","modified_gmt":"2025-04-16T08:49:51","slug":"convergence-in-contact-debonding","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/convergence-in-contact-debonding\/","title":{"rendered":"Convergence in contact debonding"},"content":{"rendered":"<p>&lt;p&gt;I have a single lap shear test involving a 2 rectangular shaped specimens (one in aluminum and one in woven cf) bonded together with an adhesive I created with czm formulation (wanting to investigate the decohesion of the specimen within the adhesive interface). Contact is defined as bonded and pure penalty formulation, convergence is not reached. Could you please list a series of suggestions to achieve convergence in this specific contact debonding tool in static structural? And also a checklist of the important settings so that I can check if I missed somethimng&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-429111","topic","type-topic","status-publish","hentry","topic-tag-adhesivelybondedsinglelapjoint-1","topic-tag-cohesive-zone-modeling","topic-tag-cohezivezonemodeling-1","topic-tag-contact-method","topic-tag-contact-debonding"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"I have a single lap shear test involving a 2 rectangular shaped specimens (one in aluminum and one in woven cf) bonded together with an adhesive I created with czm formulation (wanting to investigate the decohesion of the specimen within the adhesive interface). Contact is defined as bonded and pure penalty formulation, convergence is not\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/convergence-in-contact-debonding\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Convergence in contact debonding | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"I have a single lap shear test involving a 2 rectangular shaped specimens (one in aluminum and one in woven cf) bonded together with an adhesive I created with czm formulation (wanting to investigate the decohesion of the specimen within the adhesive interface). 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Contact is defined as bonded and pure penalty formulation, convergence is not\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/convergence-in-contact-debonding\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/contact-debonding\\\/#listItem\",\"name\":\"contact-debonding\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/contact-debonding\\\/#listItem\",\"position\":3,\"name\":\"contact-debonding\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/contact-debonding\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/convergence-in-contact-debonding\\\/#listItem\",\"name\":\"Convergence in contact debonding\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/convergence-in-contact-debonding\\\/#listItem\",\"position\":4,\"name\":\"Convergence in contact debonding\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/contact-debonding\\\/#listItem\",\"name\":\"contact-debonding\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/convergence-in-contact-debonding\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/convergence-in-contact-debonding\\\/\",\"name\":\"Convergence in contact debonding | Ansys Learning Forum\",\"description\":\"I have a single lap shear test involving a 2 rectangular shaped specimens (one in aluminum and one in woven cf) bonded together with an adhesive I created with czm formulation (wanting to investigate the decohesion of the specimen within the adhesive interface). 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