{"id":167194,"date":"2022-03-10T16:36:02","date_gmt":"2022-03-10T16:36:02","guid":{"rendered":"\/forum\/forums\/topic\/static-equilibrium-of-rigid-body-system\/"},"modified":"2022-04-05T10:52:19","modified_gmt":"2022-04-05T10:52:19","slug":"static-equilibrium-of-rigid-body-system","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/static-equilibrium-of-rigid-body-system\/","title":{"rendered":"Static equilibrium of rigid body system."},"content":{"rendered":"
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Hello!<\/p>\n

I have a question about Rigid Dynamics and Static Structural. Is it possible to find static equlibrium of system of rigid bodies using these types of analysis? In more detail, I want to model a system of rigid rods connected by springs. There is also a load applied to the end of one of the rods. The load is constant and shouldn't change direction. The problem is to find a static equilibrium of this system under the load. Masses , materials and radii of rods don't matter because the problem is static.<\/p>\n

I tried to do that with 1 horizontal rod (modeled just by solid cylinder) connected to the ground in one of its lateral faces by revolute joint with non-zero rotational stiffness. I tried to apply load to the other lateral face of the cylinder. <\/p>\n

First I've tried Rigid Dynamics analysis but I faced the problem that only Remote Force can be applied to the rod. But I don't know is it ok to define the origin of remote force to be not on the face I want to apply this force to. I tried several times to apply the force from different locations. The solution always failed. Anyway, I don't really know if it is possible to solve static problem in Rigid Dynamics where it's not possible to make a constraint of zero acceleration for example.<\/p>\n

In Static Structural I've also defined Remote Force because the solver said that usual Force can't be applied to rigid body. Solution didn't converge, it has many errors, including "Not enough constraints appear to be applied to prevent rigid body motion." That's why I don't know is it possible to to solve static equilibrium problem of rigid body in Structural as it's always trying to prevent rigid body motion.<\/p>\n

It would be very nice to get an answer for my question. Thank you very much!!!<\/p>\n","protected":false},"template":"","class_list":["post-167194","topic","type-topic","status-closed","hentry","topic-tag-ansys-mechanical","topic-tag-ansys-student","topic-tag-convergence","topic-tag-static-structural","topic-tag-structural-mechanics"],"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