ANSYS Error Message:
Specified constraint not allowed on slave degree of freedom in coupled set. Coupled set number 1 First node= 52 Slave node = 899 Degree of freedom = UX Move constraint to first node or remove coupling and constrain all.
The error message usually occurs when one has a couple, or a constraint equation defined on a node which conflicts with another boundary condition defined on the same node. Here are some ways to debug this error message:
- Look for multiple constraints defined at the same nodes.
- Sometimes, the conflict may be occurring at, or due to remote points defined within the model. Suppress the remote points and / or disable weak springs to debug the issue.
- In same cases weak springs may also prompt this error message. Disable weak springs to see if it fixed the issue.