For the Calculix users, when simulating a contact, often a common error is faced ‘At least one node is overconstrained for the current settings. Please check your boundary conditions for incompatible settings.’
To understand this better, we have created a documentation over it. Please take a look at the following link:
A short summary is as follows:
- In a contact simulation, the nodes of the slave face cannot be constraint in any direction.
- Often there is a case that there are common nodes at the edges of two faces.
- If one face is slave and other has come constraint boundary condition applied, the above error is produced.
- The solution to this is presented in above link.
A round about way will be to use CodeAster instead of Calculix, if the user does not desire to make any CAD changes.