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Creo 9.0.7.0. T5 license
I'm trying to create a mapped mesh on very simple shape. But when I try to create the mesh it fails to make bricks and reverts to tets. I've spent a lot of time trying to do this very simple task and I am frustrated.
My geometry an extruded sketch. It has (or had) some fillets on the vertical edges but I have suppressed them. I have selected every surface combination possible (there are 3 possibilities - top+bottom, the two sides, and the ID and OD).
I only have Creo Simulate Advanced 2 ( or 3).
Here is my model in Creo 2, does it work for you?
Thank you Skunks. Your geometry was more complex than mine (you made a cone and I made a section of a cylinder) and you helped me think things through.
The problem is that I applied a load using the "total load at point" option . Which appears to be the only way to apply a force in a cylindrical coordinate system such that it can be analyzed using non-linear analysis. My attempts to work around this problem have failed, but when I suppress this load it meshes. Which makes sense - the mesher wants to put a node where I applied the force, but I randomly selected the point and it is not associated with any geometry and is not where a node is created by the mesher, so it creates a meshing conflict. I have since created a datum point (and a simulation point) in the geometric center of the face hoping that if the datum point was at the location of a node mapped meshing would work, but it doesn't. I have determined why mapped meshing didn't work, but I have yet to overcoming the challenge of applying a load to the face (in a cylindrical coordinate system) so I can run the model non-linear.
This is preventing me from map meshing bricks:
..."total load at point"...
For "total load at point", I would click on a corner point.
PS: example attached
Thanks again Skunks. I gave up on the mapped mesh, turned my point in the middle of the face into a hardpoint, and set a maximum element size. This resulted in a higher density tet mesh, applied the force evenly to the surface, and eliminated my buckling problem, which was occurring due to a bad element shape. However; I do like your meshing approach better than the approach I used so I may give it a try.
I am trying to model an elastomer with a modulus of 1 MPa. Modeling an elastomer has many challenges. I solved the buckling problem due to the element shape, but more buckling problems exist at higher loads and these are due to boundary conditions. If I could create a constraint which sets displacements on a surface equal, but not a prescribed amount of displacement (I am applying a force to these surfaces), I could create realistic boundary conditions. To my knowledge this is not possible, so I believe I must model and simulate an assembly. I may also need to use a hyperelastic material model. I was hoping I could keep my analysis simple but the complexity is increasing.
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