We’ve got our simulation study set up for the above shown suspension bracket. We’ve meshed the assembly, and think it looks pretty good’ but how do we know?
It’s important to have a larger number of mesh elements at any location where we’ll be seeing large changes in stress. With insufficient elements, we may not accurately capture the stress values in the part, and as a result won’t be able to understand if the part is really yielding or not. On the above mesh plot, we predict that stress change will likely occur at the fillet pointed out.
We’ve got a decent number of elements there for a first-pass study’ at least from what can be see on the surface. But what about internal to the part?
A nice new enhancement for SOLIDWORKS 2016 is the ability to section a mesh plot. We can now interrogate the internal mesh structure to understand if a mesh control may be needed.
We can then use the property manager inputs to define the location, or simply drag a section plane dynamically through the model and cut the mesh.
In this case, it looks like we might need a few more elements around that fillet. Let’s add a mesh control, and take a look at the difference:
That result looks much better! There are plenty of elements at the fillet region, so we know we’ll capture the higher stress area correctly. However, further down through the thickness, we’ve still created sufficiently large elements, so as not to unnecessarily increase the solve time! We can also see the element growth ratio taking effect not only on the surface, but internal to the tetrahedral mesh thickness as well.
Next time you’re trying to evaluate your mesh quality, make sure to check out the mesh sectioning tool!
Found this post useful? Check out some of our Other Simulation Blogs!
For other cool new enhancements for 2016, check out how you can Create Circular Sweeps more quickly, or see our What’s New 2016 Cheat-Sheet.