TY - JOUR
T1 - Steady-state dynamic response of structures with nonlinear hysteretic isolators
AU - Wong, C. W.
AU - Ni, Yiqing
AU - Ko, J. M.
PY - 1993/1/1
Y1 - 1993/1/1
N2 - In a previous paper, a mathematical model of a nonlinear hysteretic vibration isolator, with amplitude-dependent parameters, was established based on experimental study. In this paper, the corresponding multi-harmonic steady-state response analysis is addressed. The computational method is based on the Galerkin/Levenberg-Marquardt approach, in which the frequency/time domain alternation and FFT procedures, as well as numerical search in the transformed time domain, are introduced. The response features of this hysteretic model are identified. Then, the steady-state responses of base-isolated structures are analyzed by the proposed method with the use of modal partial decoupling. Analytical responses of a vibration-isolated frame are compared favorably with experimental findings.
AB - In a previous paper, a mathematical model of a nonlinear hysteretic vibration isolator, with amplitude-dependent parameters, was established based on experimental study. In this paper, the corresponding multi-harmonic steady-state response analysis is addressed. The computational method is based on the Galerkin/Levenberg-Marquardt approach, in which the frequency/time domain alternation and FFT procedures, as well as numerical search in the transformed time domain, are introduced. The response features of this hysteretic model are identified. Then, the steady-state responses of base-isolated structures are analyzed by the proposed method with the use of modal partial decoupling. Analytical responses of a vibration-isolated frame are compared favorably with experimental findings.
UR - http://www.scopus.com/inward/record.url?scp=0027152760&partnerID=8YFLogxK
M3 - Journal article
SN - 1077-5463
VL - 8
SP - 63
EP - 78
JO - The International journal of analytical and experimental modal analysis
JF - The International journal of analytical and experimental modal analysis
IS - 1
ER -