{"id":179498,"date":"2023-08-25T12:16:31","date_gmt":"2023-08-25T12:16:31","guid":{"rendered":"\/knowledge\/forums\/topic\/how-to-overcome-non-convergence-in-transient-impact-analysis\/"},"modified":"2023-08-25T12:16:31","modified_gmt":"2023-08-25T12:16:31","slug":"how-to-overcome-non-convergence-in-transient-impact-analysis","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-overcome-non-convergence-in-transient-impact-analysis\/","title":{"rendered":"How to overcome non-convergence in transient impact analysis?"},"content":{"rendered":"<p>For overcoming the convergence difficulties:  1. Try reducing the angle\/ distance between two parts before going for impact analysis &#8211; this helps in reducing the applied load  2. Reduce the FKN (Normal Stiffness Factor) value in the contact settings  3. Try running your model with impact constraints. Using Impact Constraints help a lot with these as to not add artificial energy to rebounding impactor.  4. Increase the no. of sub steps Please refer to the model attached.<\/p>\n<p>Attachments:<br \/>\n1. <a href=https:\/\/ansys13.ansys.com\/KnowledgeArticles\/Phase-3\/2048660\/2048660.zip>2048660.zip<\/a><\/p>\n","protected":false},"template":"","class_list":["post-179498","topic","type-topic","status-publish","hentry","topic-tag-4431","topic-tag-mechanical","topic-tag-multibody","topic-tag-structural-mechanics-general","topic-tag-structural-dynamics","topic-tag-structural-mechanics"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"For overcoming the convergence difficulties: 1. Try reducing the angle\/ distance between two parts before going for impact analysis - this helps in reducing the applied load 2. Reduce the FKN (Normal Stiffness Factor) value in the contact settings 3. Try running your model with impact constraints. Using Impact Constraints help a lot with these\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-overcome-non-convergence-in-transient-impact-analysis\/\" \/>\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 Knowledge | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"How to overcome non-convergence in transient impact analysis? | Ansys Knowledge\" \/>\n\t\t<meta property=\"og:description\" content=\"For overcoming the convergence difficulties: 1. Try reducing the angle\/ distance between two parts before going for impact analysis - this helps in reducing the applied load 2. 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