{"id":235536,"date":"2022-09-17T07:31:21","date_gmt":"2022-09-17T07:31:21","guid":{"rendered":"\/forum\/forums\/topic\/problem-with-contact-simulation-in-mechanical-apdl\/"},"modified":"2022-09-17T07:31:21","modified_gmt":"2022-09-17T07:31:21","slug":"problem-with-contact-simulation-in-mechanical-apdl","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problem-with-contact-simulation-in-mechanical-apdl\/","title":{"rendered":"Problem with Contact Simulation in Mechanical APDL"},"content":{"rendered":"<p>Hello Forum!<\/p>\n<p>I have a problem with my contact simulation in Ansys APDL. Basically I am simulating Spur gear contact in a way that one gear is held in place on its inner diameter while on the inner diameter of the other gear torque is applied. The two tooth flanks that are in contact are defined as Contact174 and Target170 surfaces. I have the Problem that when I simulate this Model one surface penetrates the other as in the attached Picture (It seems contact is only detected at one node, probably the one initially in contact, the rest of the contact area is ignored). But when I use the Large deflection effects setting (NLGEOM) this problem does not seem to occur and the simulation seems to work fine. I dont understand why this setting would help me with the simulation though, as the contact is initially closed and the deformation of the elements is minimal.<\/p>\n<p>What are some settings that would make this simulation run correctly (or is NLGEOM a valid setting for this and why)? I have tried a lot of different settings (Pinball region, &#8230;) but it seems none have really worked<\/p>\n<p>Other settings I use: Solid186 elements, symmetric contact pair, pure lagrange multiplier, auto time step.<\/p>\n<p>Thanks<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/09\/17-09-2022-1663399530-Displaced.PNG\" alt=\"\" width=\"641\" height=\"484\"><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/09\/17-09-2022-1663399563-Contstat.PNG\" alt=\"\" width=\"645\" height=\"485\"><\/p>\n","protected":false},"template":"","class_list":["post-235536","topic","type-topic","status-closed","hentry","topic-tag-ansys-mechanical-apdl","topic-tag-apdl","topic-tag-contact"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello Forum!I have a problem with my contact simulation in Ansys APDL. 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