基于快速收敛Monte Carlo法的含缺陷压力容器可靠性计算  

Reliability Calculation of Pressure Vessel with Cracks Based on Rapid Convergence Monte Carlo Method

作　　者：何柏林[1] 霍立兴[1] 张玉凤[1] 

机构地区：[1]天津大学材料科学与工程学院

出　　处：《压力容器》2000年第2期32-34,共3页Pressure Vessel Technology

基　　金：国家自然科学基金

摘　　要：In this paper,a modified Monte Carlo method is used to find both the reliability index and the design point.By mathematical treatment,the drawing samples of the shortest distance between the origin of the coordinates and the failure surface and the coordinates corresponding to the point on the failure surface are found,from which the reliability index and the design point can immediately be obtained.The calculation results indicate that the rapid convergence Monte Carlo method has the characteristics of fast convergence and high accuracy.The simulating times have no relationship with the value of failure probability.The method can be widely used in reliability safety assessment of pressure vessels.In this paper,a modified Monte Carlo method is used to find both the reliability index and the design point.By mathematical treatment,the drawing samples of the shortest distance between the origin of the coordinates and the failure surface and the coordinates corresponding to the point on the failure surface are found,from which the reliability index and the design point can immediately be obtained.The calculation results indicate that the rapid convergence Monte Carlo method has the characteristics of fast convergence and high accuracy.The simulating times have no relationship with the value of failure probability.The method can be widely used in reliability safety assessment of pressure vessels.ReliabilityCalculati

关 键 词：压力容器 缺陷 可靠性 快速收敛 蒙特卡罗法 

分 类 号：TH490.2[机械工程—机械制造及自动化] TB114.3[理学—概率论与数理统计]