An informative blog on different types of meshes and their uses in 3D Meshing
http://www.comsol.co.in/blogs/meshing-your-geometry-various-element-types/
An informative blog on different types of meshes and their uses in 3D Meshing
http://www.comsol.co.in/blogs/meshing-your-geometry-various-element-types/
If you are dealing with complicated problems, simplified analyses with simplified models and limited analysis goals would be always helpful. Such simple analyses as your pilot study would provide you with the following benefits:
Pilot studies are helpful in answering “what if” questions in modelling or to test the software and to see if it behaves as expected.
Source: Concepts and Applications of Finite Element Analysis by R. D. Cook et al