peteroznewman
Subscriber
Insert into your reply an image of the plate and show where the crack is.
Insert an image showing which edges you want to put boundary conditions on.
Are you doing a shell model or a solid model of the plate?
In a shell model, it is easy to apply two types of boundary condition: Fixed and Pinned. Fixed holds all translations and all rotations at zero. Pinned holds only translations at zero while rotations are free.