东华大学学报（英文版）2006，Vol.23Issue(4)：94-97,4.
Analyzing Nonstationary Random Response of a SDOF System under the Evolutionary Random Excitation by Wavelet Transform
Analyzing Nonstationary Random Response of a SDOF System under the Evolutionary Random Excitation by Wavelet Transform
LI Fang-bing 1ZHANG Tian-shu1
作者信息
- 1. College of Sciences, Donghua University, Shanghai 201620
- 折叠
摘要
Abstract
For evolutionary random excitations, a general method of analyzing nonstationary random responses of systems was presented in this paper. Firstly, for the evolutionary random excitation model, the evolutionary power spectrum density function (EPSD) of a random excitation was given by wavelet transform. Based on the EPSD, the nonstationary responses of a SDOF system subjected to evolutionary random excitations were studied. The application and validity of presented method were illustrated by numerical examples. In numerical examples, the recently developed stochastic models for EI Contro (1934) and Mexico City (1985) earthquakes which preserve the nonstationary evolutions of amplitude and frequency content of ground accelerations were used as excitations. The nonstationary random mean-square responses of a SDOF system under these two excitations were evaluated and compared with simulated results.关键词
evolutionary random excitation/wavelet transform/nonstationary random responseKey words
evolutionary random excitation/wavelet transform/nonstationary random response分类
信息技术与安全科学引用本文复制引用
LI Fang-bing,ZHANG Tian-shu..Analyzing Nonstationary Random Response of a SDOF System under the Evolutionary Random Excitation by Wavelet Transform[J].东华大学学报（英文版）,2006,23(4):94-97,4.
