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一、问题的提出目前、对机械零件进行优化设计时,通常把机械零件材料的强度、工作载荷等随机变量作为常量来处理。用这种观点去建立数学模型,用优化法优选出来的结果可能存在零件强度可靠性低的问題,特别对可靠度高的零件更不能得到保证。如果只用可靠性设计法去进行设计,虽然保证了零件强度的可靠性,但又不能保证零件其它方面的要求。如果把可靠与优化
First, the issue raised At present, the optimal design of mechanical parts, mechanical parts usually the strength of materials, workload and other random variables as a constant to deal with. From this point of view to establish a mathematical model, the result of the optimization method out of the existence of low reliability parts strength, especially for parts with high reliability can not be guaranteed. If only the reliability of the design method to design, although the reliability of the parts to ensure the reliability, but can not guarantee the other parts requirements. If reliable and optimized