{"id":305636,"date":"2023-09-09T10:05:16","date_gmt":"2023-09-09T10:05:16","guid":{"rendered":"\/forum\/forums\/topic\/brinells-hardness-test-contact-problem\/"},"modified":"2023-09-09T10:05:16","modified_gmt":"2023-09-09T10:05:16","slug":"brinells-hardness-test-contact-problem","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/brinells-hardness-test-contact-problem\/","title":{"rendered":"Brinell&#8217;s Hardness test- Contact problem"},"content":{"rendered":"<p>Hello,<\/p>\n<p>I am using the Hertz contact to define the contact between the indenter and the sample. I have follwed this video https:\/\/youtube.com\/playlist?list=PLtt6-ZgUFmMKfcjKvN4Uoc7Z6CP4q8OAU&amp;si=wEcjyGVTDq13Esbc . After running the simulation the indentation caused by the spherical ball is not taking the shape of the sphere. I have used a stiffnes factor of 1, formulation is augmented langrage and the contact friction is zero. The CONTACT element is the specimen and the TARGET is the indenter.<\/p>\n<p>My queries are, why is the indentation not speherical, the indentatio appears to be too small and the hardness number calculated is not corresponding to the theoretical value.&nbsp;<\/p>\n<p>Finally how do i calculate the tagent modulus for bilinear isotropic hardening.<img decoding=\"async\" title=\"Contact\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/09\/09-09-2023-1694253810-E _ Copy of Copy of Contact Area1 - Mechanical [ANSYS Mechanical Enterprise] 9_9_2023 10_58_38 AM.png\" alt=\"Why is contact depth not increasing with time?\"><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-305636","topic","type-topic","status-closed","hentry","topic-tag-ansysworkbench-ansys-staticstructural","topic-tag-ansys"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["22733","88","65573"],"_bbp_author_ip":["23.206.193.59"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["648"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["305636"],"_bbp_forum_id":["27815"],"_bbp_engagement":["88","22733","65573"],"_bbp_voice_count":["3"],"_bbp_reply_count":["6"],"_bbp_last_reply_id":["309545"],"_bbp_last_active_id":["309545"],"_bbp_last_active_time":["2023-09-30 16:50:42"]},"test":"davidndishu54gmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/305636","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\/305636\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=305636"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}