{"id":181899,"date":"2024-02-21T12:28:13","date_gmt":"2024-02-21T12:28:13","guid":{"rendered":"\/knowledge\/?post_type=topic&#038;p=181899"},"modified":"2025-07-10T12:19:49","modified_gmt":"2025-07-10T12:19:49","slug":"how-to-apply-bolt-pretension-in-ansys-discovery","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/how-to-apply-bolt-pretension-in-ansys-discovery\/","title":{"rendered":"How to apply bolt Pretension in ANSYS Discovery?"},"content":{"rendered":"<p>Evaluation of the structural integrity of assemblies often involves proper modeling and analysis of <strong>bolted connections<\/strong>, including the consideration of bolt preload effects. <strong>Bolt pretension<\/strong> is a method used in structural analysis to simulate the preload that is applied when a bolt is tightened. This preload is important as it can affect the performance and safety of bolted joints. In Discovery, you can use the bolt pretension to model a bolt which is holding together two bodies by applying a known value of clamp force, grip length adjustment, or torque (to simulate the tightening of a nut or bolt). The Bolt Preload condition in the Refine stage applies a pretension load to a cylindrical face &#8212; typically to model a bolt under pretension. In addition, in both Explore and Refine stages, you can assign a bolt preload to a 1-D beam as a replacement to a 3-D bolt, created through bolt assignment tool.<\/p>\n<p>This video goes over various aspect of bolt pretension, how it can be applied in Discovery.<\/p>\n<p><iframe loading=\"lazy\" class=\"vidyard_iframe\" src=\"\/\/play.vidyard.com\/mqYAmZMpSEc2zyTx5zukrd.html?\" width=\"640\" height=\"360\" frameborder=\"0\"><\/iframe><\/p>\n<p>Please refer to this knowledge article to understand how you can use the bolt idealization tool to create 1D bolts: <a href=\"\/knowledge\/forums\/topic\/structural-simulation-using-bolt-idealization\/?template=discovery\">Structural Simulation using Bolt Idealization\u00a0<\/a><\/p>\n<hr \/>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-196803 size-medium\" src=\"https:\/\/innovationspace.ansys.com\/knowledge\/wp-content\/uploads\/sites\/4\/2024\/02\/Bolt_Preload_AIS_thmbnl-300x238.png\" alt=\"\" width=\"300\" height=\"238\" srcset=\"https:\/\/innovationspace.ansys.com\/knowledge\/wp-content\/uploads\/sites\/4\/2024\/02\/Bolt_Preload_AIS_thmbnl-300x238.png 300w, https:\/\/innovationspace.ansys.com\/knowledge\/wp-content\/uploads\/sites\/4\/2024\/02\/Bolt_Preload_AIS_thmbnl-24x19.png 24w, https:\/\/innovationspace.ansys.com\/knowledge\/wp-content\/uploads\/sites\/4\/2024\/02\/Bolt_Preload_AIS_thmbnl-36x29.png 36w, https:\/\/innovationspace.ansys.com\/knowledge\/wp-content\/uploads\/sites\/4\/2024\/02\/Bolt_Preload_AIS_thmbnl-48x38.png 48w, https:\/\/innovationspace.ansys.com\/knowledge\/wp-content\/uploads\/sites\/4\/2024\/02\/Bolt_Preload_AIS_thmbnl.png 458w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n","protected":false},"template":"","class_list":["post-181899","topic","type-topic","status-publish","hentry","topic-tag-3d-bolt","topic-tag-analysis","topic-tag-assemblies","topic-tag-beam-analysis","topic-tag-bolt-assignment","topic-tag-bolt-idealization","topic-tag-bolt-pretension","topic-tag-bolted-connections","topic-tag-clamp-force","topic-tag-cylindrical-face","topic-tag-discovery-software","topic-tag-grip-length","topic-tag-modeling","topic-tag-nut-tightening","topic-tag-performance","topic-tag-pretension-load","topic-tag-pretension-video","topic-tag-refine-stage","topic-tag-safety","topic-tag-structural-integrity","topic-tag-torque","filter-by-application-discovery","filter-by-application-discovery-explore"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Evaluation of the structural integrity of assemblies often involves proper modeling and analysis of bolted connections, including the consideration of bolt preload effects. Bolt pretension is a method used in structural analysis to simulate the preload that is applied when a bolt is tightened. This preload is important as it can affect the performance and\" \/>\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-apply-bolt-pretension-in-ansys-discovery\/\" \/>\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 apply bolt Pretension in ANSYS Discovery? | Ansys Knowledge\" \/>\n\t\t<meta property=\"og:description\" content=\"Evaluation of the structural integrity of assemblies often involves proper modeling and analysis of bolted connections, including the consideration of bolt preload effects. 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Bolt pretension is a method used in structural analysis to simulate the preload that is applied when a bolt is tightened. This preload is important as it can affect the performance and\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/how-to-apply-bolt-pretension-in-ansys-discovery\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/torque\\\/#listItem\",\"name\":\"torque\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/torque\\\/#listItem\",\"position\":3,\"name\":\"torque\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/torque\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/how-to-apply-bolt-pretension-in-ansys-discovery\\\/#listItem\",\"name\":\"How to apply bolt Pretension in ANSYS Discovery?\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/how-to-apply-bolt-pretension-in-ansys-discovery\\\/#listItem\",\"position\":4,\"name\":\"How to apply bolt Pretension in ANSYS Discovery?\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic-tag\\\/torque\\\/#listItem\",\"name\":\"torque\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/#organization\",\"name\":\"Ansys Knowledge\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/how-to-apply-bolt-pretension-in-ansys-discovery\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/knowledge\\\/forums\\\/topic\\\/how-to-apply-bolt-pretension-in-ansys-discovery\\\/\",\"name\":\"How to apply bolt Pretension in ANSYS Discovery? | Ansys Knowledge\",\"description\":\"Evaluation of the structural integrity of assemblies often involves proper modeling and analysis of bolted connections, including the consideration of bolt preload effects. 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