{"id":51445,"date":"2021-01-20T01:49:14","date_gmt":"2021-01-20T01:49:14","guid":{"rendered":"\/forum\/forums\/topic\/hasel-actuator-2\/"},"modified":"2021-04-28T18:25:37","modified_gmt":"2021-04-28T18:25:37","slug":"hasel-actuator-2","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/hasel-actuator-2\/","title":{"rendered":"HASEL actuator"},"content":{"rendered":"<p>Hey guys,nI&#8217;ve been working on modelling the HASEL actuator, specifically the peano HASEL actuator ( demonstrated in the following video).\u00a0<a href=\"https:\/\/www.youtube.\" target=\"blank\">https:\/\/www.youtube.<\/a><a href=\"https:\/\/www.youtube.com\/watch?v=-TKjJBZEZe4\" target=\"blank\">com\/watch?v=-TKjJBZEZe4<\/a>nI&#8217;m having trouble matching my simulated results with the practical results. before showing how I modelled the HASEL actuator below in Fig 1. shows how the HASEL actuator should look when it is &#8216;fully strained&#8217;.n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ci6.googleusercontent.com\/proxy\/KF93GWA10LD-FCGVd0_oIySCB7B1tzyj8kJKv4o-TlNRO9MJVSKaMFE8KTBv4wyM_wPWUj_rnsXKc_OQNR_oVFxU0_3IWpR-AxIUMl0K=s0-d-e1-ft#https:\/\/us.v-cdn.net\/6032193\/uploads\/PINZJ0441S9K\/image.png\" width=\"320\" height=\"180\" \/>n<i>Fig 1. the desired result that I want to simulate<\/i>nI modelled the HASEL actuator in 2D with 3 element types as shown in Fig 2. belown<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ci5.googleusercontent.com\/proxy\/hBVeao6Rk7v9IBs3wf9r3SeDpsHehhp4q8EUhDi850VcXBbUGoWG95XW_GLm8-lJrWJOJbSaZUafvzT6beaX2ikDJVKgjMmtmmBcykHj=s0-d-e1-ft#https:\/\/us.v-cdn.net\/6032193\/uploads\/7WZ5EVQJJ3WG\/image.png\" width=\"320\" height=\"180\" \/>n<i>Fig 2. PLANE183 to represent the pouch (shown by the white board around the actuator)<\/i>n<i>HSFLD241 to represent the fluid (shown in purple)<\/i>n<i>TRANS126 to represent the electrodes force on the actuator (shown in red)<\/i>nnthe mesh seems to me be good, with a few exceptions at the ends of the actuator.nMy issue is when I solve the model I can never quite reach the &#8216;full strain&#8217; which is effecting my results giving zero displacement where the load would be attached Fig 3.nn<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ci4.googleusercontent.com\/proxy\/hFmoVY5vfg4XsBRxPIQyqy3JNvgAS-FFwGb8bb9FSJzdmBuLqoWZwjULeYyOO0CuCzRGQ5PRgtCJ_o6syvQcxTIg7mKgBfuFgDaeVJIu=s0-d-e1-ft#https:\/\/us.v-cdn.net\/6032193\/uploads\/TAY8282BQAFS\/image.png\" width=\"320\" height=\"180\" \/>nn<i>Fig 3. a contour plot of the x displacement for the HASEL after a voltage has been applied. The red circle is were the load would be attached and the red square is the corresponding contour displacement value.<\/i>No matter what is do I can not reach that full strain or get any reasonable strain at the load.nI even tried using the &#8216;penalty method&#8217; to set the electrodes final displacement to the &#8216;fully strained&#8217; position and I got the same result.nI seem to have reached some sort of limit with either the PLANE183 or the HSFLD241 that I can&#8217;t exceed.nPlease let me know if anything isn&#8217;t clear.nAny help will be much appreciated.nRegardsnLevin<\/p>\n","protected":false},"template":"","class_list":["post-51445","topic","type-topic","status-closed","hentry","topic-tag-electrostatics","topic-tag-fluid","topic-tag-hydrostatics","topic-tag-mechanical-apdl","topic-tag-system-coupling"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["23715"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["closed"],"_bbp_author_ip":["\u0001?k3"],"_bbp_old_sticky_status_id":["normal"],"_bbp_status":["publish"],"_bbp_likes_count":["0","0","0","0","0"],"_btv_view_count":["543"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["51445"],"_bbp_forum_id":["27792"],"_bbp_engagement":["25","185186"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["139547"],"_bbp_last_active_id":["139547"],"_bbp_last_active_time":["2021-01-21 12:11:52"]},"test":"levi_tynan"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/51445","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\/51445\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=51445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}