结构可靠性计算的自动化方法及实现  

Automatic Method of Structural Reliability Calculation and Its Realization

作　　者：刘超 王世鹏 王雨欣 LIU Chao;WANG Shipeng;WANG Yuxin(Basic Teaching Department,Dalian Polytechnic University,Dalian Liaoning 116038,China;School of Civil Engineering,Dalian Jiaotong University,Dalian Liaoning 116028,China)

机构地区：[1]大连工业大学基础教学部,辽宁大连116038 [2]大连交通大学土木工程学院,辽宁大连116028

出　　处：《机械设计与研究》2022年第1期17-19,共3页Machine Design And Research

基　　金：国家自然科学基金(51775078);辽宁省教育厅(J2020054.JDL2020011)资助项目。

摘　　要：介绍了一种结构可靠性计算的自动化方法。通过选取结构可靠性的计算方法,从界面输入状态函数,状态函数符号化,处理得到符号化参数,提供给界面,方便对应参数提供相应的均值、方差等计算方法需要的统计特性,处理后转化为参数均值方差等统计特性数组,通过状态函数符号化和参数符号化,处理得到状态函数对各参数的一阶导数,二阶导数等数组,将以上所得的数据信息用于结构可靠性计算方法,进行结构可靠性计算得到结构的可靠性指标和可靠度。在产品的设计过程中需要充分考虑可靠性,由于可靠性计算比较复杂,每种结构都要进行新的程序的编制,不利于结构可靠性计算的推广,不利于工程工作人员进行结构的可靠性计算,本文方法实现了结构可靠性的自动计算,解决了结构可靠性设计工作的不利于推广、重复繁杂的编制程序工作。This paper introduces a method of automatic structural reliability calculation.First,the calculation method of structural reliability is selected.Then the state function is input from the interface and symbolized.The symbolic parameters are processed and provided to the interface.statistical characteristics of the corresponding parameters such as mean and variance are provided,which form a statistical characteristics array.Through symbolization of the state function and parameters,the first and second derivatives of the state function of each parameter are used to calculate the reliability of the structure.Due to the complexity of reliabilty calculation,a new program needs to be carried out for each structure,which hinders the promotion of structural reliability calculation and is inconvenient to the engineering staff carrying out structural reliability calculation.This method realizes the automatic calculation of structural reliability to help ease the extensive,repetitive and complicated programming work.

关 键 词：结构 可靠性 自动化 符号化 

分 类 号：TH122[机械工程—机械设计及理论]