# Solid Hexahedron Elements

- BRICK8
- 8-node linear element with reduced or full integration
- HA8
- 8-node linear element with various number of integration points going from 2x2x2 to 9x9x9
- HEPH
- 8-node linear element with reduced integration point and physical stabilization of hourglass modes
- BRICK20
- 20-node quadratic element with reduced or full integration schemes

For all elements, a lumped mass approach is used and the elements are isoparametric, that is, the same shape functions are used to define element geometry and element displacements.

The fundamental theory of each element is described in this chapter.