摘要
提出了冗余桁架结构在可变载荷条件下的故障分析,结构由r个取决于时间的载荷P_1(t),P_2(t),…,P_r(t)作用,以R-F法求元件的故障,而整个结构的故障概率是计算它的上下限评估,并通过一些数值例子说明上述分析的应用.
Failure analysis in redundent truss structures is proposed under variable loads applied to the structures.The structures are loaded by r time-dependent loads P_l(t), P_2(t),…, P_r(t).The probability integration method of Rackwitz-Fiessler (R-F) is used to estimate the failure of the members.Failure probability of the structures is estimated with its lower and upper bounds.The numerical examples are included for illustration.
关键词
冗余结构
故障
概率
安全限
redundant structure
safety margin
failure probability
search trees in the failure margin
