摘要
本文提出了一种随机振动信号的简单模拟方法 ,该方法用计算机模拟将单一正弦信号叠加优化成为随机振动的等效信号 ,使其满足已知的功率谱密度和概率密度函数 ,这种等效信号可作为激励进行线性和非线性振动系统的位移响应分析 ,由于该方法计算简单占用机时少 ,能用于计算机仿真随机激励的响应分析。
A simple method used to generate the random vibration signals which are obtained by adding different frequency sine signals,is dealt with in the paper.The new method can simulate the real conditions giving the identical power spectral density and probability distribution function.The examples show that the simulated random signals can be used as the equivalent excitation signals to analyse the displacement response in time domain with good results.
出处
《振动与冲击》
EI
CSCD
2000年第2期50-51,63,共3页
Journal of Vibration and Shock
关键词
随机振动
模拟信号
激励
响应分析
计算机仿真
random vibration,simulating signal,excitation generator,response analysis
