【摘要】 本文在M adsen等提出的积分方程方法基础上,采用单点FORM方法计算结构首次穿越问题中的条件穿越率、联合穿越率及首次穿越时间概率密度。提出的新方法计算简单,结果精确,适于进行脆性结构的首次穿越破坏分析。更多还原

【Abstract】 Based on the integral equation method,which is presented by Madsen and so on,the conditional upcrossing rate,the joint upcrossing rate and the first-passage time probability density are obtained by use of single-point FORM method for first-passage of structures.The present method is suitable to analyze the first-passage failure of brittle structures due to its simple calculation and accurate result.更多还原