{"id":396371,"date":"2024-12-05T05:36:52","date_gmt":"2024-12-05T05:36:52","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\/"},"modified":"2024-12-05T05:36:52","modified_gmt":"2024-12-05T05:36:52","slug":"equivalent-stress-on-bolt-thread-of-contact-is-too-big","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\/","title":{"rendered":"Equivalent stress on bolt thread of contact is too big"},"content":{"rendered":"<p>&lt;p&gt;I am doing a bolt &amp; nut simulation with 3D model. It&#8217;s a M4 bolt &amp; nut and the Bolt pretension is 3167N.&lt;\/p&gt;&lt;p&gt;For the thread contact areas\uff0c I am using a Bolt Thread of Contact geometry correction @ frictional contact, everything goes well except the Equivalent stress at the Bolt thread contact area, the Finer the mesh, the bigger the Equivalent stress at the Bolt thread contact area. When I refine the mesh to 0.2mm sizing, the Maximum Equivalent stress is 1109 MPa, it is quite unreasonable, can any one tell me why? Thanks in advance.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/05-12-2024-1733376611-mceclip1.png\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/05-12-2024-1733376474-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/05-12-2024-1733376975-mceclip2.png\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/12\/05-12-2024-1733376981-mceclip3.png\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-396371","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=\"I am doing a bolt &amp; nut simulation with 3D model. It&#039;s a M4 bolt &amp; nut and the Bolt pretension is 3167N.For the thread contact areas\uff0c I am using a Bolt Thread of Contact geometry correction @ frictional contact, everything goes well except the Equivalent stress at the Bolt thread contact area, the Finer\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\/\" \/>\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=\"Equivalent stress on bolt thread of contact is too big | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"I am doing a bolt &amp; nut simulation with 3D model. It&#039;s a M4 bolt &amp; nut and the Bolt pretension is 3167N.For the thread contact areas\uff0c I am using a Bolt Thread of Contact geometry correction @ frictional contact, everything goes well except the Equivalent stress at the Bolt thread contact area, the Finer\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-12-05T05:36:52+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-12-05T05:36:52+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Equivalent stress on bolt thread of contact is too big | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"I am doing a bolt &amp; nut simulation with 3D model. It&#039;s a M4 bolt &amp; nut and the Bolt pretension is 3167N.For the thread contact areas\uff0c I am using a Bolt Thread of Contact geometry correction @ frictional contact, everything goes well except the Equivalent stress at the Bolt thread contact area, the Finer\" \/>\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\\\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\\\/#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\\\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\\\/#listItem\",\"name\":\"Equivalent stress on bolt thread of contact is too big\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\\\/#listItem\",\"position\":3,\"name\":\"Equivalent stress on bolt thread of contact is too big\",\"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\\\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\\\/\",\"name\":\"Equivalent stress on bolt thread of contact is too big | Ansys Learning Forum\",\"description\":\"I am doing a bolt & nut simulation with 3D model. It's a M4 bolt & nut and the Bolt pretension is 3167N.For the thread contact areas\\uff0c I am using a Bolt Thread of Contact geometry correction @ frictional contact, everything goes well except the Equivalent stress at the Bolt thread contact area, the Finer\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\\\/#breadcrumblist\"},\"datePublished\":\"2024-12-05T05:36:52+00:00\",\"dateModified\":\"2024-12-05T05:36:52+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":"Equivalent stress on bolt thread of contact is too big | Ansys Learning Forum","description":"I am doing a bolt & nut simulation with 3D model. It's a M4 bolt & nut and the Bolt pretension is 3167N.For the thread contact areas\uff0c I am using a Bolt Thread of Contact geometry correction @ frictional contact, everything goes well except the Equivalent stress at the Bolt thread contact area, the Finer","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\/#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\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\/#listItem","name":"Equivalent stress on bolt thread of contact is too big"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\/#listItem","position":3,"name":"Equivalent stress on bolt thread of contact is too big","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\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/equivalent-stress-on-bolt-thread-of-contact-is-too-big\/","name":"Equivalent stress on bolt thread of contact is too big | Ansys Learning Forum","description":"I am doing a bolt & nut simulation with 3D model. 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