I created a simple analysis with a 3-point constraint system for a plate with hole in it (the part is attached in zip file with this post)
However whenever I try to analyse the part, it keeps throwing the following error:
The unconstrained degree of freedom can be seen by running
a constrained Modal Analysis with rigid mode search.
Animating the rigid modes will display the unconstrained
degrees of freedom. If the error still occurs, then the
issue could be caused by material properties or unattached
spring/mass idealizations.
How do I fix this problem?