{"id":34636,"date":"2019-04-11T10:05:34","date_gmt":"2019-04-11T10:05:34","guid":{"rendered":"\/forum\/forums\/topic\/force-convergence-plot\/"},"modified":"2019-04-11T10:05:34","modified_gmt":"2019-04-11T10:05:34","slug":"force-convergence-plot","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/force-convergence-plot\/","title":{"rendered":"Force Convergence Plot"},"content":{"rendered":"<p>Hello,<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>I have&nbsp;doubts&nbsp;regarding the force convergence plot. As far as I understood, we want the purpled line to be under the blue line. The purpled line is the difference of internal and external forces and I want it to be zero, or at least smaller than a reference value (the blue line). So far so right?<\/p>\n<p><\/p>\n<p>Now I did run a simulation and got this force convergence plot:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/04399c4b-e060-4bbf-b434-aa110096d123\/2783e403-1a8d-428e-a606-aa2c00a485b8_error-forceconvergence.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>The purple line is oscillating, almost&nbsp;all the time above the blue line,&nbsp;reaching high values up to 800 N. I was expecting a convergence error, but was surprised, that I didn&#8217;t get one. The question is, why didn&#8217;t I get an error? Can I trust the results? Or should I get sceptical about my results, when seeing this plot? And &#8211; maybe a bit general &#8211; What is the reason for oscillation in the force convergence plot? Are there some &#8220;typical mistakes&#8221;, that lead to such a plot?<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>Thank you,<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>Stephan<\/p>\n","protected":false},"template":"","class_list":["post-34636","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["6808"],"_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"],"_btv_view_count":["3773"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["34636"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","163482"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["82652"],"_bbp_last_active_id":["82652"],"_bbp_last_active_time":["2019-04-11 12:33:04"]},"test":"amnteno1"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/34636","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\/34636\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=34636"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}