{"id":163308,"date":"2021-10-22T19:31:00","date_gmt":"2021-10-22T19:31:00","guid":{"rendered":"\/forum\/forums\/topic\/how-to-decrease-the-run-time-for-an-sph-analysis-in-ls-dyna-2\/"},"modified":"2021-12-23T20:06:11","modified_gmt":"2021-12-23T20:06:11","slug":"how-to-decrease-the-run-time-for-an-sph-analysis-in-ls-dyna-2","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-decrease-the-run-time-for-an-sph-analysis-in-ls-dyna-2\/","title":{"rendered":"How to decrease the run time for an SPH analysis in LS-DYNA."},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>I am running a tensile test at a strain rate of 0.00001 s-1. It is very slow. I am modeling a tensile test with SPH Form 12 in LS-DYNA which works out to a speed of 0.00001 s-1 x 12 mm (gage length). Now this is very slow and it is taking ages to run&#8230;like 967 days, 3 hrs and 34 minutes and 32 seconds!!<\/p>\n<p>Can anyone assist with decreasing this time to a reasonable timeframe. I am using a High Performance Computer (HPC) system and they set my termination time for 4 days so I have a time constraint.<\/p>\n<p>My experience is that for FEA, it is comfortable to mass scale without changing the accuracy by much, as long as the KE is less than 10% of the Total Energy. However, given the Kernel Function used in SPH has relation to the mass of particles for momentum and continuity requirements, I am almost certain that the answer will be altered significantly, but I can be wrong.<\/p>\n<p>Please advise anyone,<\/p>\n<p>Thanks<\/p>\n<p>SS<\/p>\n","protected":false},"template":"","class_list":["post-163308","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_old_reply_author_name_id":["Anonymous"],"_bbp_old_is_reply_anonymous_id":["false"],"_btv_view_count":["1560"],"_bbp_likes_count":["0"],"_bbp_subscription":["254243","295932"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["163308"],"_bbp_forum_id":["27814"],"_bbp_engagement":["3136","13468","180130","295932"],"_bbp_voice_count":["4"],"_bbp_reply_count":["11"],"_bbp_last_reply_id":["311956"],"_bbp_last_active_id":["311956"],"_bbp_last_active_time":["2023-10-18 05:59:39"]},"test":"ssagar"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/163308","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\/163308\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=163308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}