任意分布参数的机械零件的可靠性稳健设计(一):理论部分

Reliability-based robust design of mechanical components with arbitrary distribution parameters, Part 1: theory

将可靠性优化设计理论、可靠性灵敏度技术和稳健设计方法相结合,讨论了具有任意分布参数的机械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.把可靠性灵敏度融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任意分布参数的机械零件的可靠性稳健设计,迅速准确地得到具有任意分布参数的机械零件的可靠性稳健设计信息.

This paper extensively discusses the reliability-based robust design of mechanical components with arbitrary distribution parameters by combining the reliability-based optimization design theory, the reliability sensitivity technique and the robust design method and proposed a numerical method for reliability-based robust design. The reliability sensitivity is added to the reliability-based optimization design model and the reliability-based robust design is summed up as a problem of multi-objection optimization. Under the condition that the first four moments of basic random parameters are available, the computer model based on this model can complete the reliability-based robust design of mechanical components with arbitrary distribution parameters and acquire corresponding information accurately and quickly.