机械可靠性设计的虚拟变量算法  

A Pseudo Variable Method for Mechanical Reliability Design

作　　者：郑浩哲[1] 

机构地区：[1]沈阳工业学院,沈阳110015

出　　处：《应用力学学报》2001年第2期108-112,共5页Chinese Journal of Applied Mechanics

摘　　要：基于改进的一阶二次矩理论 ,针对单一设计变量问题 ,本文提出了确定结构可靠性设计参数的一种虚拟变量算法。方法优点是无需解域变换、无需人工计算失效函数的偏导数和无需解失效的极限状态方程 ,具有较为简便的计算形式和较高的计算效率 。Founded on the improved first-order second-moment reliability theory, a pseudo variable method is proposed in this paper for the mechanical reliability design . It is suitable for the problems of the structure of single design variable. T his method is superiorin that the transformation of solving fields and manual c alculation of the partial derivatives of structural failure function as well as solution of failed limit state equation can be eliminated. This method is simple and efficient and its accuracy is equivalent to that of the traditional method s.

关 键 词：机械可靠性 机械强度 机械设计 一次二阶矩理论 虚拟变量算法 

分 类 号：TH122[机械工程—机械设计及理论] TB114.3[理学—概率论与数理统计]