{"id":455502,"date":"2026-03-31T22:54:50","date_gmt":"2026-03-31T22:54:50","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problem-with-ansys-lpbf\/"},"modified":"2026-03-31T22:54:50","modified_gmt":"2026-03-31T22:54:50","slug":"problem-with-ansys-lpbf","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problem-with-ansys-lpbf\/","title":{"rendered":"Problem with ANSYS LPBF"},"content":{"rendered":"

<div data-olk-copy-source=”MessageBody”>Hi<\/div><div> <\/div><div>I am trying to simulate the temperature profile for a part that I want to print with LPBF, but I have a major issue. The LPBF add-on does not solve in Ansys. Yes I tried different versions of Ansys but still I faced the exact same problem, regardless of whether I am on the student license or the university license.<\/div><div> <\/div><div>I followed a YouTube tutorial and followed the exact same steps (https:\/\/www.youtube.com\/watch?v=1YRoopqfoO8ac<\/a>) but this is how the procedure went for me:<\/div><div> <\/div><div>After opening workbench, I press on AM LPBF Thermal-Structural (blue rectangle). Then, I right-click on geometry (Green rectangle) and import my model (red rectangle) and I have tried different formats .STEP .STL and so on to see if that is the problem. Then, I double-click on the orange rectangle to make my setup.<\/div><div> <\/div><div><\/div><div> <\/div><div>Once Ansys Mechanical loads, without doing anything, just as the program starts, there is a red circle with ! next to AM Process (see the purple rectangle in the following image). I believe this is potential the reason why my solving process gets interrupted because if you refer to the video, you don’t see such a thing!<\/div><div> <\/div><div><\/div><div> <\/div><div>Anyways, let’s neglect it for a moment. I followed the exact same steps as the tutorial, but what happens is that after solving for 2 seconds, the program stops, so I just get to see the print bed heating (see “LPBF Failing.mp4”). It is not a license issue, because I tried reducing the number of meshes or nodes, I tried manipulating with the time step setting and so on, but regardless of what I do, the interruption happens. And interestingly I do not get any error for that!<\/div><div> <\/div><div>Did I try something similar? Yes! I tried this DED simulation https:\/\/www.youtube.com\/watch?v=SJO-Dxq3Cg8<\/a>, and managed to get a nice simulation result as you can see in the “DED Successful” video I attached. Yes the quality and meshing is awful, but I was just trying to see if it runs). <\/div><div> <\/div><div>I have no clue what the problem is, but I am sure that there is something wrong with the LPBF program itself because I went through all the guides I could find, but what happens is that I get a 2-step sequence in the results after solving which is kinda correct because there is a heating and cooling stage, but I think the end time is not controlled for any of them and I only get 1 seconds of heating and 1 seconds of cooling.<\/div><div> <\/div><div>Again, refer to LPBF Failing.mp4. In messages tab, there are warnings yes, but I don’t think they are the issue. There is one error that says there are no imported loads, but in other iterations that I did, I deactivated the imported load option and nothing changed. At some point I deleted the whole structural analysis section because I only care about temperature profile, but still the interruption took place. I tried applying some loads instead, and still nothing changed! Also, you can see that the thermal and structural part are not solved together. <\/div><div> <\/div><div>I need help with figuring out how I can do the LPBF simulation successfully and bypassing these issues which I assume that they are correlated with a bug or a missing step.<\/div><div><br>Here is the screen recordings I refferred to: https:\/\/drive.google.com\/drive\/folders\/1B8aS3wvFsS7MVHTOR3rLgg7xi5vqnYhM?usp=drive_link<\/div><div> <\/div><p> <\/p><\/p>\n","protected":false},"template":"","class_list":["post-455502","topic","type-topic","status-publish","hentry","topic-tag-AdditiveManufacturingModule-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_forum_id":["233598"],"_bbp_topic_id":["455502"],"_bbp_subscription":["655077"],"_bbp_author_ip":["130.226.87.142"],"_bbp_last_reply_id":["456322"],"_bbp_last_active_id":["456322"],"_bbp_last_active_time":["2026-04-13 07:39:12"],"_bbp_reply_count":["1"],"_bbp_reply_count_hidden":["0"],"_bbp_voice_count":["1"],"_bbp_engagement":["655077"],"_btv_view_count":["71"],"_bbp_topic_status":["unanswered"]},"test":"dakar23student-sdu-dk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/455502","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\/455502\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=455502"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}