Mesh controls are available to assist you in fine tuning the mesh to your analysis.

When in Simulation, your part or multi body part is automatically meshed at solve time. The default element size is determined based on the size of the bounding box, which is the smallest box that the part or assembly will fit in (see the description of the Initial Size Seed advanced global mesh control for details), as well as the proximity of other topologies, body curvature, and the complexity of the feature. If necessary, the fineness of the mesh is adjusted up to four times (eight times for an assembly) to achieve a successful mesh using the assembly's bounding box first, then the part's bounding box in the second pass.

You can also create the mesh before solving. To do this, select Mesh from the Tree Outline and right-click your mouse. From the context menu, choose Generate Mesh. You should keep in mind, that if you create a mesh using the Patch Independent mesher, then change boundary conditions, the meshing will need to be redone and the time spent in meshing will be wasted.

If you want more control over the mesh, you can do so using mesh control tools. To access the mesh control tools, highlight the Mesh object, then either click the right mouse button and choose Insert> {<choose a mesh control tool>}, or choose a mesh control from the Mesh Control context toolbar.