why the error in simscape mobility

in this model ,what mistake in Spherical Joint1 and Spherical Joint2，The specific problem is that when all three spherical joints are connected, an error occurs

错误:['untitled0303']: The following errors were found in the model untitled0303.

原因:

['untitled0303/Solver Configuration']: *** Model not assembled: position violation *** Resolve this issue in order to simulate the model.

[志强]

[志强]

Answer 1

[arushi]

Hi 志强,

I understand from your query that you want to know why you are encountering the following error - Model not assembled: position violation.

This error indicates that the Base and Follower coordinate frames of a Joint violate the degrees-of-freedom constraint of the Joint. This issue has been addressed in the below MATLAB Answer:

https://www.mathworks.com/matlabcentral/answers/473428-why-do-i-receive-the-following-error-when-i-run-my-simscape-multibody-model-model-not-assembled-po?s_tid=answers_rc1-3_p3_Topic

Hope this helps!