{"id":41954,"date":"2020-03-20T16:59:52","date_gmt":"2020-03-20T16:59:52","guid":{"rendered":"\/forum\/forums\/topic\/free-boundary-conditions\/"},"modified":"2020-03-20T16:59:52","modified_gmt":"2020-03-20T16:59:52","slug":"free-boundary-conditions","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/free-boundary-conditions\/","title":{"rendered":"&#8220;Free&#8221; boundary conditions"},"content":{"rendered":"<p>Dear Ansys Community<\/p>\n<p><\/p>\n<p>I&#8217;m currently working on my Bachelor Thesis regarding the distortion of a local heat treatment on a component. One of the aims of my Bachelor Thesis is to understand this kind of distortion with a finite element simulation with ANSYS workbench 2019 R2.<\/p>\n<p><\/p>\n<p>For this reason, I want to simulate <span style=\"display: inline !important; float: none; background-color: #ffffff; color: #3b3b3b; font-family: Arial,Helvetica,sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;\">in a simple test-case <\/span>how the temperature- and stress field propagates. First of all I want to understand the boundary conditions in a steady state thermal analysis connected to a structural analysis. How does the stress increase due to a local heating? See attached Picture for the thermal conditions. (Sheet metal dimensions 500x800x1.27mm)<\/p>\n<p><\/p>\n<p>I want to simulate how does a simple structure like that behave under these circumstances.&nbsp;<\/p>\n<p><\/p>\n<p>Load case:<\/p>\n<p><\/p>\n<p>Heat flux in the middle of the plate to increase the temperature to around 760&deg;C. Free convection of the whole body.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/8125305a-b7b3-47c7-8b6e-ab8401047ae6\/aaddfdf0-dfdf-4a1e-a0b2-ab8401155246_temperaturefield-plate.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>To calculate the stress and strains I have to define the boundary conditions in the structural analysis.<br \/>In an experimental setup I would like to lay this plate on the floor without clamping and heat it in the middle to about 760&deg;C. Because of the local heat input and the non-symmetrical geometry, elastic\/plastic stresses and deformations build up. How can I reproduce this free support on the floor in a digital environment? I tried it with remote displacement but i&#8217;m not sure if this is the right approach. I expected a symmetrical deformation.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/8125305a-b7b3-47c7-8b6e-ab8401047ae6\/5786bbca-6c03-4a22-a2e6-ab8401156433_deformations-plate.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-41954","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["14134"],"_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"],"_btv_view_count":["1758"],"_bbp_subscription":["248762"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["41954"],"_bbp_forum_id":["27791"],"_bbp_engagement":["240","174549"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["108569"],"_bbp_last_active_id":["108569"],"_bbp_last_active_time":["2020-03-22 01:46:13"]},"test":"livin"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/41954","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\/41954\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=41954"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}