Direct-integration time-history analysis is a nonlinear, dynamic analysis method in which the equilibrium equations of motion are fully integrated as a structure is subjected to dynamic loading. Analysis involves the integration of structural properties and behaviors at a series of time steps which are small relative to loading duration. The equation of motion under evaluation is given as follows:
NOTE: Integration is performed at every time step of the input record, regardless of the output increment.
See Also
- Mass and stiffness-proportional damping – Damping of stiff elements with inelastic softening
- Output accuracy – Time-history output-acceleration accuracy
- Ground motion at specific supports – Manual multi-support excitation