Abaqus Earthquake Analysis Exclusive -

Typically modeled with C3D8R (8-node linear brick) or C3D10 (10-node tetrahedral) elements.

A finite model truncates an infinite domain. Seismic waves reflect from artificial boundaries, causing spurious amplifications. Use Infinite Elements (CIN3D8) or Dashpots / Low-Reflection Boundaries . abaqus earthquake analysis

This is a modal-based technique used primarily for linear elastic analysis. Typically modeled with C3D8R (8-node linear brick) or