摘要
根据可靠指标的几何意义,通过坐标转换和矩阵变换,探讨了非线性功能函数在变量相关条件下可靠指标的直接迭代计算方法,导出了计算可靠指标的分位值法迭代计算公式,并给出了2个算例.计算结果表明,与传统算法相比,该算法计算简单、精度高.
Based on the geometrical meaning of structural reliability index, the direct iteration calculation of a nonlinear function under the condition of correlated variables was discussed by using coordinate transformation and matrix operation. The calculation formulas based on the contribution value method was derived, and two numerical examples were given. The calculational results show that compared with the traditonal algorithms, this algorithm is simple in calculation and high in precision.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2004年第2期147-151,共5页
Journal of Southwest Jiaotong University
关键词
相关变量
非线性
可靠指标
直接迭代
分位值法
correlated variable
nonlinearity
reliability index
direct iteration
contribution value method
