Techno Press
Techno Press

Earthquakes and Structures   Volume 8, Number 5, May 2015, pages 1055-1067
DOI: http://dx.doi.org/10.12989/eas.2015.8.5.1055
 
Earthquake response spectra estimation of bilinear hysteretic systems using random-vibration theory method
Azad Yazdani and Mohammad-Rashid Salimi

 
Abstract     [Full Text]
    A theoretical procedure to estimate spectral displacement of a hysteretic oscillator with bilinear stiffness excited by band-limited excitation is presented. The stochastic method of ground-motion simulation is combined with the random vibration theory to compute linear and nonlinear structural response. The response is obtained by computing the root-mean-square oscillator response using dissipation energy balancing by integrating over all energy levels of system weighting with the stationary probability density of the energy. The results are presented in a convenient form, and the accuracy of the procedure is assessed by comparison with results obtained with the time-domain method using the recorded data. The model shows little or no bias at the structural period of engineering interest.
 
Key Words
    bilinear hysteretic; random-vibration; displacement; stochastic; point-source
 
Address
Azad Yazdani and Mohammad-Rashid Salimi: Department of Civil Engineering, University of Kurdistan, Sanandaj, Iran
 

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