摘要
根据应力-强度干涉分布理论和可靠性设计方法,建立基于P-S-N(可靠性-应力-寿命)的可靠度计算数学模型,并利用概率分布密度曲线干涉区间积分、复合梯形法则和辛普生法则来实现可靠度的高精确度数值化求解,通过编写计算机程序算法得以实现。算例表明,与传统的可靠性计算方法相比,系统可靠性的计算精确度得到显著提高,研究成果具有工程应用背景。
On the basis of stress-strength interference distribution theory and reliability designing method,mathematical modeling of reliability calculation based on P-S-N（Reliability-Stress-Life）has been made,while numerical solution with high accuracy has been fulfilled by computer program through probability density distribution curve interference interval integral 、compounding trapezium principle and Simpson principle.The example shows：compared with traditional method of reliability calculation,the calculation accuracy of system reliability has been significantly improved.The research achievement has its background in engineering application.
出处
《计算力学学报》
EI
CAS
CSCD
北大核心
2012年第2期190-194,共5页
Chinese Journal of Computational Mechanics
基金
湖南省自然科学基金(07JJ3095)资助项目
关键词
应力-强度
概率密度分布曲线
可靠度
数值化求解
stress-strength
probability density distribution curve
reliability
numerical solution
