


{"id":314278,"date":"2023-11-01T08:04:39","date_gmt":"2023-11-01T08:04:39","guid":{"rendered":"\/forum\/forums\/topic\/apdl-node-stress-and-id-issue\/"},"modified":"2023-11-01T08:04:39","modified_gmt":"2023-11-01T08:04:39","slug":"apdl-node-stress-and-id-issue","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/apdl-node-stress-and-id-issue\/","title":{"rendered":"APDL Node Stress and ID issue"},"content":{"rendered":"<p>Hello everyone, I hope everone is doing well.&nbsp;<\/p>\n<p>I have a question related to APDL in Ansys Mechanical. I have discover this langugage not so long ago and I launched myself into a project but I am facing strange problems.&nbsp;<\/p>\n<p>In my code, I use the *<strong>GET <\/strong>function to obtain the stress at some node (so far no problem), for example :&nbsp;<br \/><em>*GET,S1,NODE,Node_1,S,1 ! for Node_1 = 1106<\/em><\/p>\n<p>However, where the nighmares begin, when I use the same function but for the node Node_2 = 18828 then I ran into problems :&nbsp;<\/p>\n<div id=\"paraDiv\">\n<p id=\"paragraphData\" class=\"paragraphText\" style=\"font-size: 12px;display: inline\">Requested data is not stored for node 18828.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br \/>&nbsp; Line= *GET, Sigma2a2, NODE, Node_2, S, 1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br \/>&nbsp; The *GET command is ignored.&nbsp;<\/p>\n<\/div>\n<p>Consequnelty, I checked the mesh I done in Ansys : <strong>Number of nodes<\/strong> = 81924. So I am node out of boundary.&nbsp;<\/p>\n<p>I am also able to plot the stress at this point, so it exist. When I export the result (right click -&gt; export) the result of the stress goes from node 141 to node 81924. MMmm ok I assumed, just where are the nodes 1 to 140 ? Anyway, my node is inside !&nbsp;<\/p>\n<p>In APDL when I use the function <strong>PRNSOL&nbsp;<\/strong>for the stress, I am able to see in the Post Output that nodes where found and assigned with a stres value. However, the number of the nodes goes from 1 to 11631, then switch to 81925 to 93555. This is wrong, and the worst is that the value of 1 equal the value of 81925, same thing until 11631 and 93555. Therefore, assuming that the script is looking here, then I understand that it does not find the node 18828, because it is skipt here (for marvelous reasons).&nbsp;<\/p>\n<p>And also, because nothing make sens to me, when I plot the node ID min and max, I have, respectively, 1 and 163848 (?) where 163848 is two times 81924, why ? I don&#8217;t understand.&nbsp;<\/p>\n<p style=\"text-align: justify\"><em>*GET,node_min,NODE,0,num,minD &nbsp; &nbsp; &nbsp; &nbsp; !Get the minimum node id<\/em><br \/><em>*GET,node_max,NODE,0,num,maxD &nbsp; &nbsp; &nbsp; &nbsp; !Get the maximum node id<\/em><\/p>\n<p>So all of this to say, that I would like just to have an APDL function to get the maximum principal stress (S,1) at one point who does not seems to exist, but it does.&nbsp;<\/p>\n<p>PS : If needed I can send my code but it is nearly just what I am doing, getting values of stress at certain nodes.&nbsp;<\/p>\n<p>Thanks you very much for your help ! \ud83d\ude00&nbsp;<\/p>\n","protected":false},"template":"","class_list":["post-314278","topic","type-topic","status-closed","hentry","topic-tag-ansys-mechanical","topic-tag-ansys-mechanical-apdl","topic-tag-apdl","topic-tag-postprocessing"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["297021","490","23687"],"_bbp_author_ip":["96.7.218.215"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["15271"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["314278"],"_bbp_forum_id":["27791"],"_bbp_engagement":["490","23687","297021"],"_bbp_voice_count":["3"],"_bbp_reply_count":["8"],"_bbp_last_reply_id":["314968"],"_bbp_last_active_id":["314968"],"_bbp_last_active_time":["2023-11-06 06:09:30"]},"test":"francois-gleyzonde-ebmpapst-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/314278","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\/314278\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=314278"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}