【摘要】 一个承受随机载荷的结构,其危险点处的应力谱可以用实验或计算的方法得到。本文提出应用Monte—Carlo法可以得到任意多个应力时间历程,如果有了结构的S—N疲劳曲线,应用雨流循环计数法及Miner准则,便可得到结构疲劳寿命的平均值。全部计算过程可以在计算机上自动完成。更多还原

【Abstract】 When a structure is subjected to random excitation, the stress Spectral density can be obtained by experiment or calculation. Using the Monte-Carlo’s method, many stress-time histories may be developmented. The fatigue lifetime is predicted by means of rainflow method and Miner’s rule if the fatigue S-N Curve of this structure is given.更多还原