摘要
将常规边界元基本方程的矩阵表达式分解为均值和波动值２部分，建立起随机边界元波动方程。利用全徽分理论，导出灵敏性矩阵表达式。结合结构可靠度计算模式的建立编制了随机边界元法的结构可靠度电算ＳＴＯＢＥＭ程序。通过工程实例可靠度分析，结果表明此法精度良好。
Basical matrix equation of BEM is divided into two parts that are the mean value matrix and the variance value matrix.Based on the approach,the wave equation is established.With the aid of the total differential theory,the sensitivity matrix is introduced.By means of the calculated model of the structural reliability,the computed program(STOBEM) of structural reliability of stochastic BEM is designed.From the calculeted results of STOBEM program, it was shown that the accuracy of the program is very good.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
1994年第3期69-76,共8页
Journal of Fuzhou University(Natural Science Edition)
关键词
可靠度
随机变量
结构
边界元法
reliability,random variable,boundary element,stochastic boundary element method
