Eigenvalue extraction, Section 2.5.1
Variables associated with the natural modes of a model, Section 2.5.2
Linear dynamic analysis using modal superposition, Section 2.5.3
Damping options for modal dynamics, Section 2.5.4
Modal dynamic analysis, Section 2.5.5
Response spectrum analysis, Section 2.5.6
Steady-state linear dynamic analysis, Section 2.5.7
Random response analysis, Section 2.5.8
Base motions in modal-based procedures, Section 2.5.9