摘要
基于虚拟激励法和摄动随机有限元法,推导了单自由度体系复合随机动力响应问题的计算方法,并在灵敏度分 析中有效地消除了长期项的影响.算例表明,该法数值分析结果与Monte-Carlo随机模拟结果比较,具有理想的精度.
Based on the pseudo-excitation method and perturbation stochastic finite element method, the random seismic response analysis of the single degree of freedom (SDOF) stochastic structural system is studied in this paper. And secular terms are effectively removed from the sensitivity analysis using Fourier transform method. The numerical example shows the results of the proposed method are satisfactory by contrast with those of Monte Carlo simulation method.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第1期6-9,共4页
Journal of Tongji University:Natural Science
基金
国家自然科学基金资助项目(50279031)
关键词
虚拟激励法
摄动随机
有限元法
灵敏度分析
FOURIER变换
pseudo-excitation method
perturbation stochastic
finite element method
sensitivity analysis
Fourier transform
