@@xindeng4107 I refined the mesh of the RHS part and then I switched master and slave surfaces, otherwise you get a warning when you do a Data Check / run your analysis (because the master shouldn't have a finer mesh than the slave).

@@elena-laurabuhan6081 Hi Elena-Laura! I got the same warning! What do you mean by refine the mesh of the RHS?

@@adesilva1376 Hi, I went back to my model and I see that I assigned a global mesh control of 5. That did the trick for me. I think because no seeds were assigned to the edges from the middle partition, those use the global seeds and the default that I had was too big (25).

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Hi .. do you have any video or file can help me to make modelling steel STRUCTURES by abaqus..I mean the connection between beams and columns

Hello Attia, I'm grateful for your feedback! Concerning your question, the kinematic coupling constraints are useful in cases where a large number of nodes are constrained to the rigid body motion of a single node and the degrees of freedom that participate in the constraint are selected individually in a local coordinate system. So, you can use kinematic coupling between the RP and cross section or Rigid Body simulation in these kind of problems, because the behavior between the nodes will be the same. In my case, I wanted to approach as much as possible my numerical model to the experimental tests, but it will always depend on what you want to perform. I hope my answer elucidates you to proceed with your problem.

Oh thank you my friend Pedro, I understand your answer, do you have a problem in the exchange of experiences between us in the future, I am a doctoral student in civil engineering. I'm working now a shears connections.