I am attempting to setup a simulation, of a hoop shaped part, that I have cut up into a pie shaped piece for analysis. The problem is that when I go to setup a symmetry fixture, on each side of the pie shaped cut, I get an error message (the plane of symmetry for this restraint is not perpendicular ...) , and cannot establish the fixture.
The strange part about this is that the exact same symmetry fixture worked fine in Simulation 2011. I even opened up one of the simulations from 2011, in Simulation 2013, and symmetry fixtures appear fine, with no errors. But if I edit one of those symmetry fixtures, deleting the two surface selections in the fixture, and then re-selecting those very same surfaces, it gives me the error message, and won’t let me do it!
Now I just set up the simplest of pie shaped parts (envision a pie with a hole in center, then sliced), and I cannot put symmetry fixtures on both cut faces of a slice. Unlike this simplified test model, the real part cannot be modeled with 2D simplification. And I don't think that just putting on flat face fixtures will make this function as if it was a continuous 360 degree hoop. (image attached)
Any insight on how to work around this would be appreciated!
Dan,
The definition of the symmetry boundary condition for solids is no displacement component perpendicular to the symmetry plane. So a roller slider or on flat face will do the job.