{"id":405792,"date":"2025-01-19T18:25:39","date_gmt":"2025-01-19T18:25:39","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/create-an-autofrettage-analysis-with-residual-stresses-used-as-initial-condition\/"},"modified":"2025-01-27T07:29:37","modified_gmt":"2025-01-27T07:29:37","slug":"create-an-autofrettage-analysis-with-residual-stresses-used-as-initial-condition","status":"answered","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/create-an-autofrettage-analysis-with-residual-stresses-used-as-initial-condition\/","title":{"rendered":"Create an autofrettage analysis with residual stresses used as initial condition"},"content":{"rendered":"<p>&lt;p&gt;&lt;p&gt;&lt;p&gt;&lt;p&gt;&lt;p&gt;Hi Everyone&lt;\/p&gt;&lt;p&gt;I&#8217;m working on an analysis that requires residual stresses created from an autofrettage process.&lt;\/p&gt;&lt;p&gt;I&#8217;ve seen how it is recommended to using multiple steps instead of linking two static structural analysis.&lt;\/p&gt;&lt;p&gt;So i&#8217;ve simulated the autofrettage part just to feel what kind of results to expect.&lt;\/p&gt;&lt;p&gt;Created 2 steps. step 0-1: ramp the load at 1.5 x the materials yield streng; step 1-2 remove the load so that it is 0MPa at step 2. analysed the results.&lt;\/p&gt;&lt;p&gt;Created another sim with 4 steps, adding on the previous sim, step 2-3: zero load; and step 3-4 326MPa (maximum pressure that the component will be subjected to in real life).&lt;\/p&gt;&lt;p&gt;In real life, the pressure is loaded by cordinates (x &amp; y) where it varies with x. I feel like I&#8217;m messing up somewhere because i&#8217;m not getting the results i though i would. Not sure how two pressure loads (step 1) loads the pressure using steps but load pressure 2 (intended to be step 2) using tabular data can meet.&lt;\/p&gt;&lt;p&gt; &lt;\/p&gt;&lt;p&gt;please help, for masters.&lt;\/p&gt;&lt;\/p&gt;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/01\/19-01-2025-1737314095-Capture3.PNG\" alt=\"variable pressure not appearing under analysis settings\" \/>&lt;\/p&gt;&lt;\/p&gt;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/01\/19-01-2025-1737314286-Capture1.PNG\" alt=\"\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2025\/01\/19-01-2025-1737314238-Capture.PNG\" alt=\"\" \/>&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-405792","topic","type-topic","status-answered","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["27791"],"_bbp_topic_id":["405792"],"_bbp_subscription":["504754","240"],"_bbp_author_ip":["102.32.103.201"],"_bbp_last_reply_id":["406874"],"_bbp_last_active_id":["406874"],"_bbp_last_active_time":["2025-01-23 20:17:04"],"_bbp_reply_count":["21"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["2"],"_bbp_engagement":["504754","240"],"_btv_view_count":["598"],"_bbp_topic_status":["answered"],"_edit_last":["504754"],"_bbp_revision_log":["a:4:{i:405826;a:2:{s:6:\"author\";i:504754;s:6:\"reason\";s:0:\"\";}i:405832;a:2:{s:6:\"author\";i:504754;s:6:\"reason\";s:0:\"\";}i:405834;a:2:{s:6:\"author\";i:504754;s:6:\"reason\";s:0:\"\";}i:405836;a:2:{s:6:\"author\";i:504754;s:6:\"reason\";s:0:\"\";}}"],"_bbp_notification_enabled":["504754"]},"test":"201182080student-uj-ac-za"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/405792","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":4,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/405792\/revisions"}],"predecessor-version":[{"id":405836,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/405792\/revisions\/405836"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=405792"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}