{"id":361838,"date":"2024-04-11T22:45:26","date_gmt":"2024-04-11T22:45:26","guid":{"rendered":"\/forum\/forums\/topic\/convergence-problem-contact-definition-in-a-4-point-test\/"},"modified":"2024-04-11T22:45:26","modified_gmt":"2024-04-11T22:45:26","slug":"convergence-problem-contact-definition-in-a-4-point-test","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/convergence-problem-contact-definition-in-a-4-point-test\/","title":{"rendered":"Convergence problem – Contact definition in a 4-point test"},"content":{"rendered":"

Hi,
I have the following case: a plate of irregular shape supported on 2 cylinders and a load applied by two cylinders as shown in the image.<\/p>\n

However, the cylinders are not in contact because the plate is irregularly shaped (thinking of achieving this in the simulation).
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I have loaded this model in Mechanical. The cylinders are rigid bodies and the plate is flexible. For the definition of the contacts I have this configuration the same for all the cylinders:<\/p>\n

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This is the contact tool report:<\/p>\n

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 <\/p>\n

I have the meshing with the following local meshes.<\/p>\n

<\/p>\n

I have two fixed supports, the lower ones and 2 free remote displacement in the -Y direction which is where I apply the load. The load is applied on the cylinder surfaces. I have an additional remote displacement on the plate that has helped me to converge the solution but I am not sure if it is valid:<\/p>\n

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 <\/p>\n

<\/p>\n

And in the Analysys settings I have it configured like this:<\/p>\n

<\/p>\n

However, when I run the simulation usually a lot of bisections occur, it does not converge or it says the contacts have separated abruptly. 
What could I do to help Ansys to solve the problem?<\/p>\n","protected":false},"template":"","class_list":["post-361838","topic","type-topic","status-closed","hentry","topic-tag-ansysworkbench-ansys-staticstructural","topic-tag-3d-simulation","topic-tag-mechanical"],"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\n\t\t\n\t\t\n\t\t