Statistical analysis of the response of nonlinear systems subjected to earthquakes
The dynamic response of single degree of freedom nonlinear systems subjected to earthquake motions is considered with the purpose of deriving factors for constructing inelastic design spectra, and to evaluate the effect of damping combined with inelastic behavior and the influence of the type of material nonlinearity on inelastic response. Inelastic response spectra for elastoplastic systems with 2, 5, and 10 percent damping, and for bilinear and stiffness degrading systems with 5% damping, are computed for a number of frequencies ranging from about 0.03 cps to 35 cps, for ductility values from 1 to 10, and for ten strong-motion earthquake records. A statistical procedure is developed to analyze the data; from this analysis, factors for deriving the characteristic trapezoidal design spectrum are obtained. Such factors reflect, in an explicit manner, the effect of the various parameters considered.
- Research Organization:
- Illinois Univ., Urbana (USA). Dept. of Civil Engineering
- OSTI ID:
- 5181570
- Report Number(s):
- UILU-79-2016; ON: DE84900637
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
420100* -- Engineering-- General Engineering-- (-1987)
ALLOYS
BUILDING MATERIALS
CONCRETES
DAMPING
DATA ANALYSIS
DESIGN
EARTHQUAKES
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL STRUCTURES
NONLINEAR PROBLEMS
REINFORCED CONCRETE
REINFORCED MATERIALS
SEISMIC EFFECTS
SEISMIC EVENTS
STEELS