{"id":310943,"date":"2023-10-10T22:05:48","date_gmt":"2023-10-10T22:05:48","guid":{"rendered":"\/forum\/forums\/topic\/out-of-range-velocities-of-nodes\/"},"modified":"2023-10-10T22:05:48","modified_gmt":"2023-10-10T22:05:48","slug":"out-of-range-velocities-of-nodes","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/out-of-range-velocities-of-nodes\/","title":{"rendered":"Out-of-range Velocities of Nodes"},"content":{"rendered":"<p class=\"MsoNormal\" style=\"text-align: justify\"><span style=\"font-size: 12.0pt;line-height: 105%;font-family: 'Arial',sans-serif;color: black;background: #FBFBFB\">Hello,<\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-align: justify\"><span style=\"font-size: 12.0pt;line-height: 105%;font-family: 'Arial',sans-serif;color: black;background: #FBFBFB\">I have modeled a timber panel in LS-DYNA using *MAT_WOOD. The analysis goes well until an <strong>out-of-range velocity error<\/strong> terminates the analysis.<span>&nbsp; <\/span><\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-align: justify;line-height: 115%\"><span style=\"font-size: 12.0pt;line-height: 115%;font-family: 'Arial',sans-serif;color: black\">I set <\/span><strong><span style=\"font-size: 12.0pt;line-height: 115%;font-family: 'Arial',sans-serif;color: black;background: #FBFBFB\">ERODE=1<\/span><\/strong><span style=\"font-size: 12.0pt;line-height: 115%;font-family: 'Arial',sans-serif;color: black;background: #FBFBFB\"> and <strong>DTMIN=0.5<\/strong> to get rid of negative volume. I am also using <strong>TSSFAC=0.67<\/strong> and <strong>ELFORM=1<\/strong> for my model. Regarding the <strong>hourglass control<\/strong>, I used <\/span><strong><span style=\"font-size: 12.0pt;line-height: 115%;font-family: 'Arial',sans-serif\">type 4<\/span><\/strong><span style=\"font-size: 12.0pt;line-height: 115%;font-family: 'Arial',sans-serif\"> with the hourglass coefficient <strong>0.03<\/strong>. <span style=\"color: black;background: #FBFBFB\">When I run the model with such settings, element erosion will happen due to negative volume as you can see in the following picture, however, <\/span><\/span><span style=\"font-size: 12.0pt;line-height: 115%;font-family: 'Arial',sans-serif;color: black\">an <\/span><strong><span style=\"font-size: 12.0pt;line-height: 115%;font-family: 'Arial',sans-serif;color: black;background: #FBFBFB\">error termination<\/span><\/strong><span style=\"font-size: 12.0pt;line-height: 115%;font-family: 'Arial',sans-serif;color: black;background: #FBFBFB\"> occurs because of the out-of-range velocities of some nodes. I wonder what the reason for this error<strong>!<\/strong><\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-align: justify;line-height: 115%\"><strong><span style=\"font-size: 12.0pt;line-height: 115%;font-family: 'Arial',sans-serif;color: black;background: #FBFBFB\">&nbsp;<\/span><\/strong><\/p>\n<p class=\"MsoNormal\" style=\"text-align: justify\"><span style=\"font-size: 12.0pt;line-height: 105%;font-family: 'Arial',sans-serif;color: black;background: #FBFBFB\">Thanks in advance for your kind attention. <\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-align: justify\"><span style=\"font-size: 12.0pt;line-height: 105%;font-family: 'Arial',sans-serif;color: black;background: #FBFBFB\">I look forward to hearing from you. <\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-align: justify;line-height: 115%\"><span style=\"font-size: 12.0pt;line-height: 115%;font-family: 'Arial',sans-serif;color: black\">Regards,<\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-align: justify\"><span style=\"font-size: 12.0pt;line-height: 105%;font-family: 'Arial',sans-serif;color: black\">Mehdi<\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-align: justify\"><span style=\"font-size: 12.0pt;line-height: 105%;font-family: 'Arial',sans-serif;color: black\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/10\/10-10-2023-1696975512-1.png\" alt=\"\"><\/span><\/p>\n","protected":false},"template":"","class_list":["post-310943","topic","type-topic","status-closed","hentry","topic-tag-ls-dyna"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["290312","3136"],"_bbp_author_ip":["23.206.193.150"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["2150"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["310943"],"_bbp_forum_id":["27814"],"_bbp_engagement":["3136","290312"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["311163"],"_bbp_last_active_id":["311163"],"_bbp_last_active_time":["2023-10-11 21:28:45"]},"test":"mehdisaloocmail-carleton-ca"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/310943","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\/310943\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=310943"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}