{"id":447023,"date":"2025-11-22T14:10:07","date_gmt":"2025-11-22T14:10:07","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/divergence-in-3-point-bending-test-with-contact-friction\/"},"modified":"2025-11-22T14:10:07","modified_gmt":"2025-11-22T14:10:07","slug":"divergence-in-3-point-bending-test-with-contact-friction","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/divergence-in-3-point-bending-test-with-contact-friction\/","title":{"rendered":"Divergence in 3-Point Bending Test with Contact + Friction"},"content":{"rendered":"<p>&lt;p data-start=&#8221;186&#8243; data-end=&#8221;245&#8243;&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;Hi everyone,&lt;\/span&gt;&lt;br data-start=&#8221;198&#8243; data-end=&#8221;201&#8243;&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;Here&rsquo;s what I&rsquo;ve observed in the simulation:&lt;\/span&gt;&lt;\/p&gt;&lt;p data-start=&#8221;247&#8243; data-end=&#8221;443&#8243;&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;I am testing a sandwich panel modeled with solid elements (SOLID) in a 3-point bending setup. The supports are cylinders, and I applied Remote Displacement to impose their translation.&lt;\/span&gt;&lt;\/p&gt;&lt;p data-start=&#8221;445&#8243; data-end=&#8221;609&#8243;&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;When I set the contact between the cylinders and the sandwich as &ldquo;totally bonded&rdquo;, the simulation works even for relatively large displacements (e.g., 10 mm).&lt;\/span&gt;&lt;\/p&gt;&lt;p data-start=&#8221;611&#8243; data-end=&#8221;752&#8243;&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;However, when I switch to contact with friction, the simulation only converges for small displacements. Beyond about 8 mm, it diverges.&lt;\/span&gt;&lt;\/p&gt;&lt;p data-start=&#8221;754&#8243; data-end=&#8221;788&#8243;&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;I have added photos showing:&lt;\/span&gt;&lt;\/p&gt;&lt;ul data-start=&#8221;789&#8243; data-end=&#8221;892&#8243;&gt;&lt;li style=&#8221;font-size: 10pt;&#8221; data-start=&#8221;789&#8243; data-end=&#8221;830&#8243;&gt;&lt;p data-start=&#8221;791&#8243; data-end=&#8221;830&#8243;&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;the case when the simulation diverges&lt;\/span&gt;&lt;\/p&gt;<\/li>\n<p>&lt;li style=&#8221;font-size: 10pt;&#8221; data-start=&#8221;831&#8243; data-end=&#8221;861&#8243;&gt;&lt;p data-start=&#8221;833&#8243; data-end=&#8221;861&#8243;&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;the case when it converges&lt;\/span&gt;&lt;\/p&gt;<\/li>\n<p>&lt;li style=&#8221;font-size: 10pt;&#8221; data-start=&#8221;862&#8243; data-end=&#8221;892&#8243;&gt;&lt;p data-start=&#8221;864&#8243; data-end=&#8221;892&#8243;&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;how I defined the contacts&lt;\/span&gt;&lt;\/p&gt;<\/li>\n<\/ul>\n<p>&lt;p data-start=&#8221;849&#8243; data-end=&#8221;987&#8243;&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;Could someone advise what parameters I should modify to make the simulation converge for larger displacements with contact and friction?&lt;\/span&gt;&lt;\/p&gt;&lt;p data-start=&#8221;849&#8243; data-end=&#8221;987&#8243;&gt;&lt;span style=&#8221;font-size: 10pt;&#8221;&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/11\/22-11-2025-1763820244-mceclip0.png\" \/><a>&nbsp;<\/a><img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/11\/22-11-2025-1763820319-blobid0.jpg\" alt=\"\" \/><img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/11\/22-11-2025-1763820361-mceclip1.png\" \/>&lt;\/span&gt;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-447023","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hi everyone,Here\u2019s what I\u2019ve observed in the simulation:I am testing a sandwich panel modeled with solid elements (SOLID) in a 3-point bending setup. The supports are cylinders, and I applied Remote Displacement to impose their translation.When I set the\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/divergence-in-3-point-bending-test-with-contact-friction\/\" \/>\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=\"Divergence in 3-Point Bending Test with Contact + Friction | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hi everyone,Here\u2019s what I\u2019ve observed in the simulation:I am testing a sandwich panel modeled with solid elements (SOLID) in a 3-point bending setup. The supports are cylinders, and I applied Remote Displacement to impose their translation.When I set the\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/divergence-in-3-point-bending-test-with-contact-friction\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2025-11-22T14:10:07+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2025-11-22T14:10:07+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Divergence in 3-Point Bending Test with Contact + Friction | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hi everyone,Here\u2019s what I\u2019ve observed in the simulation:I am testing a sandwich panel modeled with solid elements (SOLID) in a 3-point bending setup. The supports are cylinders, and I applied Remote Displacement to impose their translation.When I set the\" \/>\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\\\/divergence-in-3-point-bending-test-with-contact-friction\\\/#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\\\/divergence-in-3-point-bending-test-with-contact-friction\\\/#listItem\",\"name\":\"Divergence in 3-Point Bending Test with Contact + Friction\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/divergence-in-3-point-bending-test-with-contact-friction\\\/#listItem\",\"position\":3,\"name\":\"Divergence in 3-Point Bending Test with Contact + Friction\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}}]},{\"@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\\\/divergence-in-3-point-bending-test-with-contact-friction\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/divergence-in-3-point-bending-test-with-contact-friction\\\/\",\"name\":\"Divergence in 3-Point Bending Test with Contact + Friction | Ansys Learning Forum\",\"description\":\"Hi everyone,Here\\u2019s what I\\u2019ve observed in the simulation:I am testing a sandwich panel modeled with solid elements (SOLID) in a 3-point bending setup. The supports are cylinders, and I applied Remote Displacement to impose their translation.When I set the\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/divergence-in-3-point-bending-test-with-contact-friction\\\/#breadcrumblist\"},\"datePublished\":\"2025-11-22T14:10:07+00:00\",\"dateModified\":\"2025-11-22T14:10:07+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Divergence in 3-Point Bending Test with Contact + Friction | Ansys Learning Forum","description":"Hi everyone,Here\u2019s what I\u2019ve observed in the simulation:I am testing a sandwich panel modeled with solid elements (SOLID) in a 3-point bending setup. The supports are cylinders, and I applied Remote Displacement to impose their translation.When I set the","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/divergence-in-3-point-bending-test-with-contact-friction\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/divergence-in-3-point-bending-test-with-contact-friction\/#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\/divergence-in-3-point-bending-test-with-contact-friction\/#listItem","name":"Divergence in 3-Point Bending Test with Contact + Friction"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/divergence-in-3-point-bending-test-with-contact-friction\/#listItem","position":3,"name":"Divergence in 3-Point Bending Test with Contact + Friction","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}}]},{"@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\/divergence-in-3-point-bending-test-with-contact-friction\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/divergence-in-3-point-bending-test-with-contact-friction\/","name":"Divergence in 3-Point Bending Test with Contact + Friction | Ansys Learning Forum","description":"Hi everyone,Here\u2019s what I\u2019ve observed in the simulation:I am testing a sandwich panel modeled with solid elements (SOLID) in a 3-point bending setup. The supports are cylinders, and I applied Remote Displacement to impose their translation.When I set the","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/divergence-in-3-point-bending-test-with-contact-friction\/#breadcrumblist"},"datePublished":"2025-11-22T14:10:07+00:00","dateModified":"2025-11-22T14:10:07+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/forum\/#website","url":"https:\/\/innovationspace.ansys.com\/forum\/","name":"Ansys Learning Forum","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Learning Forum | Ansys Innovation Space","og:type":"article","og:title":"Divergence in 3-Point Bending Test with Contact + Friction | Ansys Learning Forum","og:description":"Hi everyone,Here\u2019s what I\u2019ve observed in the simulation:I am testing a sandwich panel modeled with solid elements (SOLID) in a 3-point bending setup. The supports are cylinders, and I applied Remote Displacement to impose their translation.When I set the","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/divergence-in-3-point-bending-test-with-contact-friction\/","article:published_time":"2025-11-22T14:10:07+00:00","article:modified_time":"2025-11-22T14:10:07+00:00","twitter:card":"summary_large_image","twitter:title":"Divergence in 3-Point Bending Test with Contact + Friction | Ansys Learning Forum","twitter:description":"Hi everyone,Here\u2019s what I\u2019ve observed in the simulation:I am testing a sandwich panel modeled with solid elements (SOLID) in a 3-point bending setup. The supports are cylinders, and I applied Remote Displacement to impose their translation.When I set the"},"aioseo_meta_data":{"post_id":"447023","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"limit_modified_date":false,"created":"2025-11-22 14:19:43","updated":"2026-09-19 03:23:22","ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\/topics\/\" title=\"Topics\">Topics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tDivergence in 3-Point Bending Test with Contact + Friction\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Topics","link":"https:\/\/innovationspace.ansys.com\/forum\/topics\/"},{"label":"Divergence in 3-Point Bending Test with Contact + Friction","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/divergence-in-3-point-bending-test-with-contact-friction\/"}],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27786"],"_bbp_topic_id":["447023"],"_bbp_author_ip":["2a02:8428:35a5:4f01:ec4e:4114:f27f:7f93"],"_bbp_last_reply_id":["447115"],"_bbp_last_active_id":["447115"],"_bbp_last_active_time":["2025-11-24 10:17:00"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["613448","58821"],"_btv_view_count":["566"],"_bbp_topic_status":["unanswered"],"_bbp_notification_enabled":["613448"],"_bbp_subscription":["58821"]},"test":"ikram-marzoukiestaca-eu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/447023","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\/447023\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=447023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}