{"id":366798,"date":"2024-05-14T16:02:17","date_gmt":"2024-05-14T16:02:17","guid":{"rendered":"\/forum\/forums\/reply\/366798\/"},"modified":"2024-05-14T16:08:47","modified_gmt":"2024-05-14T16:08:47","slug":"366798","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/366798\/","title":{"rendered":"Reply To: Why the sticking zone is not shown in the contact patch ?"},"content":{"rendered":"<p>&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;Thank you so much sir Mike for your too much important answer.&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;&nbsp;&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;You have recommended to me to check&nbsp;<strong>the maximum friction stress (TAUMAX)<\/strong> value considered in the contact settings and i found that TAUMAX was equal to 1 in my simulation. I need to ask you sir what is the formula should be used to calculate the TAUMAX value that i should input in the contact settings?&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;&nbsp;&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;According to the ANSYS manual:&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;<em>&rdquo; The program provides one extension of classical Coulomb friction: real constant TAUMAX is maximum contact friction with units of stress. This maximum contact friction stress can be introduced so that, regardless of the magnitude of normal contact pressure, sliding will occur if the friction stress reaches this value. You typically use TAUMAX when the contact pressure becomes very large (such as in bulk metal forming processes). TAUMAX defaults to 1.0e20. Empirical data is often the best source for TAUMAX. Its value may be close to the yield stress of the material being deformed devided by squar(3)&rdquo;.<\/em>&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;&nbsp;&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;In the case of my simulation the yield stress of the steel is 489MPA so i defined TAUMAX as follow: RMODIF,3,9,282.324281633727e6. This value is yield stress divided by squar (3). Is&nbsp;this correct sir?&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;&nbsp;&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;I&rsquo;m really confused about its value please guid me.&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;&nbsp;&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;Thank you so much sir,&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;Best regards&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;Hajar&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;&nbsp;&lt;\/div&gt;&lt;div class=&#8221;&rdquo;nova-legacy-e-text&#8221;&gt;<img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/14-05-2024-1715702209-Maximum friction stress.PNG\" alt=\"\" \/>&lt;\/div&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-366798","reply","type-reply","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=\"Thank you so much sir Mike for your too much important answer. You have recommended to me to check the maximum friction stress (TAUMAX) value considered in the contact settings and i found that TAUMAX was equal to 1 in my simulation. I need to ask you sir what is the formula should be\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/366798\/\" \/>\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=\"Reply To: Why the sticking zone is not shown in the contact patch ? | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Thank you so much sir Mike for your too much important answer. You have recommended to me to check the maximum friction stress (TAUMAX) value considered in the contact settings and i found that TAUMAX was equal to 1 in my simulation. I need to ask you sir what is the formula should be\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/366798\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/14-05-2024-1715702209-Maximum%20friction%20stress.PNG\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/14-05-2024-1715702209-Maximum%20friction%20stress.PNG\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-05-14T16:02:17+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-05-14T16:08:47+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Reply To: Why the sticking zone is not shown in the contact patch ? | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Thank you so much sir Mike for your too much important answer. You have recommended to me to check the maximum friction stress (TAUMAX) value considered in the contact settings and i found that TAUMAX was equal to 1 in my simulation. I need to ask you sir what is the formula should be\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/14-05-2024-1715702209-Maximum friction stress.PNG\" \/>\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\\\/reply\\\/366798\\\/#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\\\/forums\\\/reply\\\/366798\\\/#listItem\",\"name\":\"Reply To: Why the sticking zone is not shown in the contact patch ?\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/366798\\\/#listItem\",\"position\":2,\"name\":\"Reply To: Why the sticking zone is not shown in the contact patch ?\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}}]},{\"@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\\\/reply\\\/366798\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/reply\\\/366798\\\/\",\"name\":\"Reply To: Why the sticking zone is not shown in the contact patch ? | Ansys Learning Forum\",\"description\":\"Thank you so much sir Mike for your too much important answer. You have recommended to me to check the maximum friction stress (TAUMAX) value considered in the contact settings and i found that TAUMAX was equal to 1 in my simulation. 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You have recommended to me to check the maximum friction stress (TAUMAX) value considered in the contact settings and i found that TAUMAX was equal to 1 in my simulation. I need to ask you sir what is the formula should be","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/366798\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/366798\/#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\/forums\/reply\/366798\/#listItem","name":"Reply To: Why the sticking zone is not shown in the contact patch ?"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/366798\/#listItem","position":2,"name":"Reply To: Why the sticking zone is not shown in the contact patch ?","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}}]},{"@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\/reply\/366798\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/366798\/","name":"Reply To: Why the sticking zone is not shown in the contact patch ? | Ansys Learning Forum","description":"Thank you so much sir Mike for your too much important answer. You have recommended to me to check the maximum friction stress (TAUMAX) value considered in the contact settings and i found that TAUMAX was equal to 1 in my simulation. I need to ask you sir what is the formula should be","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/366798\/#breadcrumblist"},"datePublished":"2024-05-14T16:02:17+00:00","dateModified":"2024-05-14T16:08:47+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":"Reply To: Why the sticking zone is not shown in the contact patch ? | Ansys Learning Forum","og:description":"Thank you so much sir Mike for your too much important answer. You have recommended to me to check the maximum friction stress (TAUMAX) value considered in the contact settings and i found that TAUMAX was equal to 1 in my simulation. I need to ask you sir what is the formula should be","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/366798\/","og:image":"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/14-05-2024-1715702209-Maximum%20friction%20stress.PNG","og:image:secure_url":"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/14-05-2024-1715702209-Maximum%20friction%20stress.PNG","article:published_time":"2024-05-14T16:02:17+00:00","article:modified_time":"2024-05-14T16:08:47+00:00","twitter:card":"summary_large_image","twitter:title":"Reply To: Why the sticking zone is not shown in the contact patch ? | Ansys Learning Forum","twitter:description":"Thank you so much sir Mike for your too much important answer. You have recommended to me to check the maximum friction stress (TAUMAX) value considered in the contact settings and i found that TAUMAX was equal to 1 in my simulation. I need to ask you sir what is the formula should be","twitter:image":"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/14-05-2024-1715702209-Maximum friction stress.PNG"},"aioseo_meta_data":{"post_id":"366798","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":"content","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":true,"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":"2024-10-28 16:42:26","updated":"2026-08-22 08:24:40","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\tReply To: Why the sticking zone is not shown in the contact patch ?\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Reply To: Why the sticking zone is not shown in the contact patch ?","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/366798\/"}],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/366798","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/366798\/revisions"}],"predecessor-version":[{"id":366801,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/366798\/revisions\/366801"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=366798"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}