Because the microstructures are voxelated, each voxel in the geometry is converted directly into a SOLID185 element, leading to the structured mesh with 125000 (50 x 50 x 50) elements used for the simulations described in Hall-Petch Effect from Various Grain Sizes:

A coarser mesh with 27000 (30 x 30 x 30) elements and an edge length of 30 mm is similarly created for the simulations described in Comparison of Two Material-Assignment Options.)

The geometry is stored as an external mesh .inp file and can be imported into Ansys Workbench via an external model block. When importing the external mesh, ensure that the unit system used in the external model block to interpret the mesh is consistent with the geometry and the solver unit system.