{"id":35095,"date":"2019-05-02T15:38:22","date_gmt":"2019-05-02T15:38:22","guid":{"rendered":"\/forum\/forums\/topic\/basic-interference-fit\/"},"modified":"2019-05-02T15:38:22","modified_gmt":"2019-05-02T15:38:22","slug":"basic-interference-fit","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/basic-interference-fit\/","title":{"rendered":"Basic Interference fit"},"content":{"rendered":"<p>Hi<\/p>\n<p><\/p>\n<p>I&#8217;m trying to get an solution on Ansys workbench with the pressure that occurs from interference fit.&nbsp; I have tried with basic models, where i have shaft &amp; hole, but I can&#8217;t manage to get the results to be similar to the formula.&nbsp;<\/p>\n<p><\/p>\n<p>Formula used :<\/p>\n<p><\/p>\n<p>&nbsp;<img decoding=\"async\" src=\"https:\/\/i.gyazo.com\/400309dbd3fb32ed5a50b519975a3bf6.png\"><\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/i.gyazo.com\/92034e84195c476236177c977e9284a1.png\"><\/p>\n<p><\/p>\n<p>Young&#8217;s modulus and Poisson ratio is the same for both shaft and hole, which is standard from ansys for constructional steel<\/p>\n<p><\/p>\n<p>Shaft outer diameter is 32.03mm<\/p>\n<p><\/p>\n<p>Hole outer diameter is 40 mm&nbsp;<\/p>\n<p><\/p>\n<p>Hole inner diameter is 32 mm<\/p>\n<p><\/p>\n<p>Which should give 33.8 MPa, but i can&#8217;t get similar results on Ansys. I would like to know If there is something I&#8217;m missing or missunderstanding, would be nice to get some tips about it.&nbsp;<\/p>\n<p><\/p>\n<p><span style=\"color: #000000; font-family: Arial; font-size: 13px; white-space: pre-wrap;\">I&#8217;m using method from this example:<\/span><\/p>\n<p><\/p>\n<p><a href=\"https:\/\/caeai.com\/resources\/simulating-interference-fits-ansys-e-learning\">https:\/\/caeai.com\/resources\/simulating-interference-fits-ansys-e-learning<\/a><\/p>\n<p><\/p>\n<p>The settings im running for contacts is :&nbsp;<\/p>\n<p><\/p>\n<p>Type: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Frictionless<\/p>\n<p><\/p>\n<p>Formulation: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Augmented Lagrange<\/p>\n<p><\/p>\n<p>Detection Method:&nbsp;&nbsp;&nbsp;Nodal-Projected Normal From Contact<\/p>\n<p><\/p>\n<p>Normal Stiffness:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I&#8217;ve played around and tried different factors&nbsp;<\/p>\n<p><\/p>\n<p>Interface Treatment:&nbsp;&nbsp;Add Offset, Ramped Effects<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-35095","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["7267"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0","0"],"_btv_view_count":["5004"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["35095"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","164986"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["84486"],"_bbp_last_active_id":["84486"],"_bbp_last_active_time":["2019-05-04 14:36:29"]},"test":"norvegas25"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/35095","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\/35095\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=35095"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}