{"id":359892,"date":"2024-04-01T19:29:57","date_gmt":"2024-04-01T19:29:57","guid":{"rendered":"\/forum\/forums\/topic\/unconverged-solution-for-axisymmetric-indentation\/"},"modified":"2024-04-01T19:29:57","modified_gmt":"2024-04-01T19:29:57","slug":"unconverged-solution-for-axisymmetric-indentation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/unconverged-solution-for-axisymmetric-indentation\/","title":{"rendered":"Unconverged solution for axisymmetric indentation"},"content":{"rendered":"<p>Hi,<\/p>\n<div>My simulations focus on asymmetric indentation with frictionless interaction, and I&#8217;m encountering a few problems.&nbsp;<\/div>\n<div>&nbsp;<\/div>\n<div>My first model works, but the issue appears when I change the height dimension of my model.&nbsp;<\/div>\n<div>&nbsp;<\/div>\n<div>Here is an example of the model 1 where the dimensions for the height of the rectangle is 500nm, the length of the rectangle is 1.5 micrometers and the tip radius is 200nm.<\/div>\n<div>&nbsp;<\/div>\n<div><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/04\/01-04-2024-1711998948-model1.PNG\" alt=\"\"><\/div>\n<div><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/04\/01-04-2024-1711999248-model1__.PNG\" alt=\"\"><\/div>\n<div>&nbsp;<\/div>\n<div>In terms of contact definition, I put these parameters:<\/div>\n<div><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/04\/01-04-2024-1711999069-model1___.PNG\" alt=\"\"><\/div>\n<div>&nbsp;<\/div>\n<div>For the steps, substeps I try these combinations:&nbsp;<\/div>\n<div><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/04\/01-04-2024-1711999154-model1_.PNG\" alt=\"\"><\/div>\n<div>&nbsp;<\/div>\n<div>As regards my boundary conditions, I set a fixed support for the bottom left node of my rectangle, a blocked displacement in y for the nodes on the bottom face of the rectangle and a displacement in y = -50nm with x and z = 0 for the top face of the tip.<\/div>\n<div>For this it works, but now if I increase the height of my model from 500nm to 3 micrometers it does not converge.&nbsp;<\/div>\n<div>&nbsp;<img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/04\/01-04-2024-1711999496-model2.PNG\" alt=\"\"><\/div>\n<div>&nbsp;<\/div>\n<div><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/04\/01-04-2024-1711999544-un.PNG\" alt=\"\"><\/div>\n<div>It failed around 29nm of indentation depth.<\/div>\n<div>&nbsp;<\/div>\n<div>Can you help please ?<\/div>\n<div>&nbsp;<\/div>\n<div>Thank you !&nbsp;<\/div>\n<div>&nbsp;<\/div>\n<div>Puhia<\/div>\n","protected":false},"template":"","class_list":["post-359892","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["72329","13386"],"_bbp_author_ip":["23.206.193.154"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["262"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["359892"],"_bbp_forum_id":["27791"],"_bbp_engagement":["13386","72329"],"_bbp_voice_count":["2"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["360279"],"_bbp_last_active_id":["360279"],"_bbp_last_active_time":["2024-04-03 12:40:15"]},"test":"puhia-qalajstudent-uliege-be"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/359892","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\/359892\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=359892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}