航空学报 > 1994, Vol. 15 Issue (1): 89-93

疲劳强度的模糊可靠性设计方法

韩恩厚1, 崔广椿2   

  1. 1. 中国科学院金属腐蚀与防护研究所,腐蚀科学国家重点实验室,沈阳,110015;2. 东北大学机械二系,沈阳,110016
  • 收稿日期:1992-12-29 修回日期:1993-06-26 出版日期:1994-01-25 发布日期:1994-01-25

APPROACH OF FUZZY RELIABILITY DESIGN FOR FATIGUE STRENGTH

Han Enhou1, Cui Guangchun2   

  1. 1. State Key Laboratory for Corrosion Science,Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyan,110015;2. Department of Mechanical Engineering,Northeastern University. Shenyan,1 1001 5
  • Received:1992-12-29 Revised:1993-06-26 Online:1994-01-25 Published:1994-01-25

摘要: 用模糊集合描述应力和强度,探讨了模糊变量与随机变量同时存在时的疲劳强度可靠性设计方法。提出了当隶属函数与概率密度函数都是连续函数时的可靠度计算公式,推导出几种不同分布的可靠度计算公式,同时对模糊可靠度与普通可靠度的意义及其区别加以分析。

关键词: 材料疲劳, 模糊集, 强度, 可靠性分析

Abstract: eliability design methodology of fatigue strength is discussed with stress and strength variables described by fuzzy sets when fuzzy variables and random variables exist simultaneously.Some formulas of determining reliability are deduced assuming that membership function and probability density function are continuous The significance and difference be- tween the ″fozzy reliability″and general reliability are analyzed.

Key words: fatigue(materials), fuzzy sets, strength, reliability analysis

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