{"id":32347,"date":"2018-12-28T11:42:08","date_gmt":"2018-12-28T11:42:08","guid":{"rendered":"\/forum\/forums\/topic\/explicit-dynamics-2\/"},"modified":"2018-12-28T11:42:08","modified_gmt":"2018-12-28T11:42:08","slug":"explicit-dynamics-2","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/explicit-dynamics-2\/","title":{"rendered":"Explicit Dynamics"},"content":{"rendered":"<p>Hi Community,<\/p>\n<p><\/p>\n<p>I am facing a problem regarding explicit Dynamics. I have attached a figure in which i am analyzing impact of punch with hollow beam of 2mm thickness fixed at both ends. The beam material is Aluminium and the punch is steel (rigid). But, when i analyze i get too much hourglass energy as evident in the attached figure. For this i tried changing the mesh and refined it, changed the number of data points from 20 to 100,&nbsp;tried different&nbsp;velocities and changed the erosion controls from geometric strain to material failure,&nbsp;but the problem is still not solved.&nbsp;<\/p>\n<p><\/p>\n<p>Initially i started with curved beam and i got hourglass energy too much. After that i tried to make the beam straight but still it is the same problem as discussed above. Can anyone help me in this regard. Thanks<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/78238f3a-a66f-432d-a4e0-a978014d4c00\/18a083a3-d1bc-46a9-8bce-a9c400c01e8d_punch-beam.jpg?width=690&amp;upscale=false\" alt=\"geometry\"><\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/78238f3a-a66f-432d-a4e0-a978014d4c00\/04f02d8c-e159-45a7-804b-a9c400c05328_0.02-0.01.jpg?width=690&amp;upscale=false\" alt=\"hourglass\"><\/p>\n","protected":false},"template":"","class_list":["post-32347","topic","type-topic","status-closed","hentry","topic-tag-ansys-explicit","topic-tag-explicit-dynamics"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["4519"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0","0","0","0","0"],"_btv_view_count":["1158"],"_bbp_subscription":["237358"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["32347"],"_bbp_forum_id":["27814"],"_bbp_engagement":["897","159507"],"_bbp_voice_count":["2"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["73373"],"_bbp_last_active_id":["73373"],"_bbp_last_active_time":["2018-12-29 22:40:54"]},"test":"adkh"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/32347","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\/32347\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=32347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}