Which type of mesh can be used for both, solid and shell elements?

The selection of a hybrid mesh is appropriate because it is specifically designed to combine different types of mesh elements, such as solid and shell elements, within a single analysis. This versatility allows engineers to model complex geometries and varying thicknesses effectively.

By using a hybrid mesh, one can capitalize on the benefits of both solid elements—ideal for representing three-dimensional volumes and capturing stress distributions—and shell elements, which excel in modeling thin structures efficiently. This capability is essential in simulations where both types of behavior are present, such as in structures that combine solid body components with thin-walled sections.

In contrast, the other types of meshes listed do not have the same capability for integrating both solid and shell elements. For example, a compatible mesh typically refers to a mesh where the element sizes and shapes are consistent to ensure a smooth solution across the elements but does not imply the ability to incorporate multiple element types. An unstructured mesh offers flexibility in node placement but lacks the necessary framework to ensure compatibility between different element types. A regular mesh is defined by uniformity in element shape and size, which is also not conducive for mixing solids and shells effectively.