PRISM© is a free program for seismic response
analysis of structures idealized as single-degree-of-freedom systems. The
main features of the program include modification of earthquake
records, calculation of response time histories of various
hysteresis models, and generation of elastic and inelastic response
spectra.
![](../figures/Program/prism/prism_about_4.png)
Main
features are:
·
Modification and correction of earthquake records
- Scaling and truncation of earthquake records
- Baseline correction
- Calculation of Arias intensity
·
Inelastic
response history analysis
- Application of various hysteresis models: Linear
elastic, Bi-linear, Tri-linear,
Modified
Takeda, Bouc-Wen, and Al-Bermani
- Calculation of acceleration, velocity, and displacement
response histories
- Monitoring force-displacement relationships
·
Generation
of response spectra
- Generation of elastic spectra
- Generation of constant-ductility inelastic spectra
- Representation of spectra in various formats
![](../figures/Program/prism/prism_01_01.png)