{"id":47725,"date":"2020-08-29T17:23:35","date_gmt":"2020-08-29T17:23:35","guid":{"rendered":"\/forum\/forums\/topic\/negative-volume-error-during-ale-simulation-in-ls-dyna\/"},"modified":"2020-08-29T17:23:35","modified_gmt":"2020-08-29T17:23:35","slug":"negative-volume-error-during-ale-simulation-in-ls-dyna","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/negative-volume-error-during-ale-simulation-in-ls-dyna\/","title":{"rendered":"Negative Volume Error during ALE Simulation in LS-DYNA"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello all,<\/p>\n<p><strong>Background<\/strong><\/p>\n<p>I am currently working on a cylindrical LS-DYNA model that utilize the ALE method and encountering a error output related to negative volumes during advection. The model, shown in Figure 1 (a zoomed in view of the model), is consisted of multiple parts:<\/p>\n<ol>\n<li>Blue part is water, modeled by ALE.<\/li>\n<li>Red, green and yellow parts are the lagrangian solids. The green part is rigid while others are deformable materials.<\/li>\n<li>There is also a void part, overlapping with the lagrangian solids, not shown in Figure 1. <\/li>\n<\/ol>\n<p>The cylindrical cross section exists in the XY plane and the model is 3 element thick in the Z direction.<\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/WSGMMPYB18RD\/figure-1-jpg.jpg\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/WSGMMPYB18RD\/figure-1-jpg.jpg\" alt=\"Figure 1.JPG\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-47725","topic","type-topic","status-closed","hentry","topic-tag-ale","topic-tag-lsdyna","topic-tag-meshing","topic-tag-negative-volume","topic-tag-negative-volume-detected"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["19931"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":["FDE?"],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0"],"_btv_view_count":["2291"],"_bbp_subscription":["254873"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["47725"],"_bbp_forum_id":["27814"],"_bbp_engagement":["21501","180761"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["126190"],"_bbp_last_active_id":["126190"],"_bbp_last_active_time":["2020-09-03 19:05:30"]},"test":"dyy33"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/47725","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\/47725\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=47725"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}