{"id":391418,"date":"2024-10-25T17:32:11","date_gmt":"2024-10-25T17:32:11","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-on-what-sigma-max-is-in-spall-models\/"},"modified":"2024-10-25T17:32:11","modified_gmt":"2024-10-25T17:32:11","slug":"question-on-what-sigma-max-is-in-spall-models","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-on-what-sigma-max-is-in-spall-models\/","title":{"rendered":"Question on what sigma Max is in spall models"},"content":{"rendered":"<p>&lt;p&gt;Hello,&lt;\/p&gt;&lt;p&gt;For some hydro material models like MAT_011 or MAT_015 you can assign a spall value based on either pressure or sigmaMax. I am unsure of what sigmaMax is. Is this the Cauchy stress, deviatoric stress or something completely different?&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-391418","topic","type-topic","status-publish","hentry","topic-tag-hydrodynamic","topic-tag-johnson-cook-1","topic-tag-material"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello,For some hydro material models like MAT_011 or MAT_015 you can assign a spall value based on either pressure or sigmaMax. I am unsure of what sigmaMax is. Is this the Cauchy stress, deviatoric stress or something completely different?\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-on-what-sigma-max-is-in-spall-models\/\" \/>\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=\"Question on what sigma Max is in spall models | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hello,For some hydro material models like MAT_011 or MAT_015 you can assign a spall value based on either pressure or sigmaMax. I am unsure of what sigmaMax is. Is this the Cauchy stress, deviatoric stress or something completely different?\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-on-what-sigma-max-is-in-spall-models\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2024-10-25T17:32:11+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2024-10-25T17:32:11+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Question on what sigma Max is in spall models | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hello,For some hydro material models like MAT_011 or MAT_015 you can assign a spall value based on either pressure or sigmaMax. I am unsure of what sigmaMax is. Is this the Cauchy stress, deviatoric stress or something completely different?\" \/>\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\\\/question-on-what-sigma-max-is-in-spall-models\\\/#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\\\/material\\\/#listItem\",\"name\":\"material\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/material\\\/#listItem\",\"position\":3,\"name\":\"material\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/material\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/question-on-what-sigma-max-is-in-spall-models\\\/#listItem\",\"name\":\"Question on what sigma Max is in spall models\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/question-on-what-sigma-max-is-in-spall-models\\\/#listItem\",\"position\":4,\"name\":\"Question on what sigma Max is in spall models\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/material\\\/#listItem\",\"name\":\"material\"}}]},{\"@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\\\/question-on-what-sigma-max-is-in-spall-models\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/question-on-what-sigma-max-is-in-spall-models\\\/\",\"name\":\"Question on what sigma Max is in spall models | Ansys Learning Forum\",\"description\":\"Hello,For some hydro material models like MAT_011 or MAT_015 you can assign a spall value based on either pressure or sigmaMax. I am unsure of what sigmaMax is. Is this the Cauchy stress, deviatoric stress or something completely different?\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/question-on-what-sigma-max-is-in-spall-models\\\/#breadcrumblist\"},\"datePublished\":\"2024-10-25T17:32:11+00:00\",\"dateModified\":\"2024-10-25T17:32:11+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":"Question on what sigma Max is in spall models | Ansys Learning Forum","description":"Hello,For some hydro material models like MAT_011 or MAT_015 you can assign a spall value based on either pressure or sigmaMax. I am unsure of what sigmaMax is. Is this the Cauchy stress, deviatoric stress or something completely different?","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-on-what-sigma-max-is-in-spall-models\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-on-what-sigma-max-is-in-spall-models\/#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\/material\/#listItem","name":"material"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/material\/#listItem","position":3,"name":"material","item":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/material\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-on-what-sigma-max-is-in-spall-models\/#listItem","name":"Question on what sigma Max is in spall models"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-on-what-sigma-max-is-in-spall-models\/#listItem","position":4,"name":"Question on what sigma Max is in spall models","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/material\/#listItem","name":"material"}}]},{"@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\/question-on-what-sigma-max-is-in-spall-models\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-on-what-sigma-max-is-in-spall-models\/","name":"Question on what sigma Max is in spall models | Ansys Learning Forum","description":"Hello,For some hydro material models like MAT_011 or MAT_015 you can assign a spall value based on either pressure or sigmaMax. I am unsure of what sigmaMax is. Is this the Cauchy stress, deviatoric stress or something completely different?","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-on-what-sigma-max-is-in-spall-models\/#breadcrumblist"},"datePublished":"2024-10-25T17:32:11+00:00","dateModified":"2024-10-25T17:32:11+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":"Question on what sigma Max is in spall models | Ansys Learning Forum","og:description":"Hello,For some hydro material models like MAT_011 or MAT_015 you can assign a spall value based on either pressure or sigmaMax. I am unsure of what sigmaMax is. Is this the Cauchy stress, deviatoric stress or something completely different?","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-on-what-sigma-max-is-in-spall-models\/","article:published_time":"2024-10-25T17:32:11+00:00","article:modified_time":"2024-10-25T17:32:11+00:00","twitter:card":"summary_large_image","twitter:title":"Question on what sigma Max is in spall models | Ansys Learning Forum","twitter:description":"Hello,For some hydro material models like MAT_011 or MAT_015 you can assign a spall value based on either pressure or sigmaMax. I am unsure of what sigmaMax is. Is this the Cauchy stress, deviatoric stress or something completely different?"},"aioseo_meta_data":{"post_id":"391418","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 16:21:29","updated":"2026-09-17 08:34:07","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\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/material\/\" title=\"material\">material<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tQuestion on what sigma Max is in spall models\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":"material","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/material\/"},{"label":"Question on what sigma Max is in spall models","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/question-on-what-sigma-max-is-in-spall-models\/"}],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":["72.80.165.8"],"_btv_view_count":["504"],"_bbp_topic_status":["unanswered"],"_bbp_subscription":["471944"],"_bbp_topic_id":["391418"],"_bbp_forum_id":["27814"],"_bbp_engagement":["471944","474527"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["391619"],"_bbp_last_active_id":["391619"],"_bbp_last_active_time":["2024-10-28 16:05:15"]},"test":"6cf477992b57e49bce74c7d21ac94bb6b70989a2"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/391418","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\/391418\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=391418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}