含缺陷压力容器的概率失效分析研究进展

发布时间：2018-04-17 11:04

本文选题：压力容器 + 概率断裂力学　；参考：《西安理工大学学报》2017年03期

【摘要】：不确定性因素的统计模型和失效概率的计算方法是解决含缺陷压力容器概率断裂力学分析的重要环节。本文对以概率断裂力学理论为基础的各种不同工况下含缺陷压力容器失效分析和安全可靠性评定的研究现状进行了综述,总结了材料强度、断裂韧性、温度、缺陷尺寸及检出率等不确定性因素的常用分布特征,归纳了常用压力容器失效概率的计算方法,并进一步分析了失效概率的三种计算方法——直接解析积分法、近似法和数值模拟法的特征。本文不但提供了解决该领域内工程问题最新的方法,而且指出了目前面临的理论挑战。
[Abstract]:The statistical model of uncertain factors and the calculation method of failure probability are important to solve the probabilistic fracture mechanics analysis of pressure vessels with defects.Based on the theory of probabilistic fracture mechanics, this paper summarizes the research status of failure analysis and safety reliability assessment of pressure vessels with defects under various working conditions, and summarizes the strength, fracture toughness, temperature of materials.The common distribution characteristics of uncertain factors, such as defect size and detection rate, are summarized. The calculation methods of failure probability of common pressure vessels are summarized, and the three calculating methods of failure probability, namely, direct analytical integration method, are further analyzed.The characteristics of approximate method and numerical simulation method.This paper not only provides the latest methods to solve the engineering problems in this field, but also points out the theoretical challenges.
【作者单位】：西安理工大学土木建筑工程学院;
【基金】：国家自然科学基金联合项目(U1630144)
【分类号】：TH49

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