【作者】 陈惠亮； 姚伟达； 曹明； 黄庆； 薛国宏；

【Author】 CHEN Huiliang*, Yao Weida, Cao Ming, Huang Qing, Xue Guohong (Department of Component Research & Design, Shanghai Nuclear Engineering Research & Design Institute. Shanghai 20023 China)

【机构】 工程设备所上海核工程研究设计院；

【摘要】 本文考虑结构几何尺寸和载荷不确定性,使用结构可靠性分析方法对平板封头连接区域进行疲劳可靠性分析。通过考虑几何不确定性的可靠性分析,证明几何尺寸不确定因素对结构疲劳寿命不确定性影响较大。同时,提出一种基于6σ概念求解考虑载荷不确定性的疲劳可靠性计算方法,其可以与考虑几何不确定性可靠性计算方法结合且计算保守。最后根据计算结果,提出若干疲劳设计建议,为一般产品的疲劳设计提供一定参考。更多还原

【Abstract】 This article makes the fatigue reliability analysis on the area of the plane head interface by considering the geometry dimensions uncertainty and loads uncertainty. It shows that the dimensions uncertainty has great effect on the uncertainty of the products’ life. Meanwhile, this article provides one method, which using 6σ concept, to solve the fatigue reliability analysis considering the loads uncertainty. The overall results can be conservatively got by combining with the results of fatigue reliability analysis considering the dimensions and loads uncertainty. At last, some suggestions are provided for the fatigue design. It provides the preference and evidence to the fatigue design of the products.更多还原