文档介绍：Journal of Mechanical Strength 机
械
强
度 2004, 26( S) : 241~ 245
管道类连续系统可靠性分析与建模
RELIABILITY ANALYSIS AND MODELING OF PIPELINE
谢里阳
周金宇
王学敏
( 东北大学机械工程与自动化学院, 沈阳 110004)
XIE LiYang
ZHOU JinYu
WANG XueMin
( Department of Mechanical Engineering , Northeastern University , Shenyang 110004, China)
摘要
以管道
典型的连续系统为背景, 研究以失效概率评估为目的的连续系统的离散化问题。首先, 探讨连续
系统中
元件
的定义、划分及其物理意义, 研究元件的强度分布与元件划分之间的依赖性。继而, 考察系统强度分布与
由不同的元件划分得出的元件强度分布之间的关系, 分析系统失效概率与元件失效概率之间的关系, 以及不同尺度的元
件划分对系统失效概率模型的影响。最后, 建立元件间的失效相关性模型和相应的系统失效概率模型, 展示连续系统失
效概率与元件数量( 或系统尺度) 之间的极限关系和典型连续系统失效概率的有界性。
关键词
管道
可靠度
单元强度分布
系统强度分布
中图分类号
TB114. 3
Abstract
With pipeline failure probability estimation as the scenario, the issues of continuous system discretization ( element part-i
tion) and continuous system failure probability estimation was focused. First discussed was the partition of
element
of continuous sys-
tem, as well as the effects of element partition on failure dependence among
elements
and system failure probability estimation. Based
on the concept of virtual element, element strength distribution was expressed with respect to the different element partitions, relationship
between system strength distribution and element strength distribution was analyzed, and the dependence among element failures was ex-
pounded. Finally, a dependent system failure probability model was presen