非正态分布参数的车辆零件可靠性稳健设计  

RELIABILITY-BASED ROBUST DESIGN OF VEHICLE COMPONENTS WITH NON-NORMAL DISTRIBUTION PARAMETERS

作　　者：张义民[1] 贺向东[1] 刘巧伶[2] 闻邦椿[1] 

机构地区：[1]东北大学机械工程与自动化学院,沈阳110004 [2]吉林大学机械科学与工程学院,长春130025

出　　处：《机械工程学报》2005年第11期102-108,共7页Journal of Mechanical Engineering

基　　金：国家自然科学基金(50175043)吉林大学创新基金资助项目。

摘　　要：将可靠性优化设计理论、可靠性灵敏度技术与稳健设计方法相结合,讨论了具有非正态分布参数的车辆零件的可靠性稳健设计问题,提出了可靠性稳健设计的计算方法。把可靠性灵敏度溶入可靠性优化设计模型之中,将可靠性稳健设计归结为满足可靠性要求的多目标优化问题。在基本随机参数的前四阶矩已知的情况下,通过计算机程序可以实现具有非正态分布参数的车辆零件的可靠性稳健设计,迅速准确地得到具有非正态分布参数的车辆零件的可靠性稳健设计信息。数值算例表明所提出的方法是一种非常方便和实用的可靠性稳健设计方法。Based on the reliability-based optimization design theory, the reliability sensitivity technique and the robust design method, the reliability-based robust design of vehicle components with non-normal distribution parameters is extensively disc- ussed and a numerical method for reliability-based robust design is proposed. The reliability sensitivity is added to the reliability-based optimization design model and the reliability-based robust design is described as a multi-objection optimization. On the condition of known first four moments of basic random variables, the respective program can be used to obtain the reliability-based robust design information of vehicle components with non-normal distribution parameters accurately and quickly. According to the numerical results, the approach proposed is a convenient and practical reliability-based roust design method.

关 键 词：车辆零件 非正态分布参数 可靠性优化设计 可靠性灵敏度设计 可靠性稳健设计 

分 类 号：TH122[机械工程—机械设计及理论] U463[机械工程—车辆工程]