{"id":160287,"date":"2021-07-12T02:12:41","date_gmt":"2021-07-12T02:12:41","guid":{"rendered":"\/forum\/forums\/topic\/how-to-activate-deactivate-elements-or-change-model-in-ansys-mechanical\/"},"modified":"2022-04-26T01:55:04","modified_gmt":"2022-04-26T01:55:04","slug":"how-to-activate-deactivate-elements-or-change-model-in-ansys-mechanical","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-activate-deactivate-elements-or-change-model-in-ansys-mechanical\/","title":{"rendered":"How to Activate\/Deactivate elements or change model in Ansys Mechanical?"},"content":{"rendered":"
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I am currently modeling a PCB undergoing reflow in order to look at its warpage. Ideally, I like to run my simulation three times (Heat -> Cool down -> Reheat) to represent the thermal cycling condition that occurs in reality. In the first run, the simulation would start with an undeformed model. Then, in the second run, I would like Ansys to start with a model that contains the deformation distribution from the first run. <\/p>\n

How can I change the model after my first run and before my second run is my main question here.<\/p>\n

So here's my thought on how to approach this:<\/p>\n

After the first run, deactivate all of the elements for the PCB and reactivate with no strain in order to remove the stress components of the elements. Using this technique, the FEA model of PCB in the second run will only have the deformation distribution. But how can I implement this? Through some kind of commands?<\/p>\n

Any suggestion on how to implement is greatly appreciated! Thanks!<\/p>\n","protected":false},"template":"","class_list":["post-160287","topic","type-topic","status-closed","hentry","topic-tag-command-objects","topic-tag-elements","topic-tag-mechanical-apdl"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t