{"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":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello,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\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/brinells-hardness-test-contact-problem\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Brinell\u2019s Hardness test- Contact problem | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"Hello,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\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/brinells-hardness-test-contact-problem\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2023\/09\/09-09-2023-1694253810-E%20_%20Copy%20of%20Copy%20of%20Contact%20Area1%20-%20Mechanical%20%5BANSYS%20Mechanical%20Enterprise%5D%209_9_2023%2010_58_38%20AM.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2023\/09\/09-09-2023-1694253810-E%20_%20Copy%20of%20Copy%20of%20Contact%20Area1%20-%20Mechanical%20%5BANSYS%20Mechanical%20Enterprise%5D%209_9_2023%2010_58_38%20AM.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2023-09-09T10:05:16+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2023-09-09T10:05:16+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Brinell\u2019s Hardness test- Contact problem | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Hello,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. 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