摘要
本文介绍了国际上五种简化疲劳极限应力 (σm-σa)图 ,分析了Goodman图、简化疲劳极限折线图、Soder berg直线图、Биргер抛物线图和Gerber抛物线图应用特点 ,针对其中之一的Gerber抛物线在可靠性强度计算中的疲劳极限的均值和标准差的计算 ,与实验数据比较符合 ,并对比折线方程的优点加以分析说明 ,为可靠性设计研究奠定了理论基础。
International lasts five kinds of fatigue limits stress ( σ m-σ a ) diagrams were introduced in this paper, and application characteristics of Good man diagram, Simplified fatigue limit fold curve diagram, Soderberg line diagram , Биргер parabola and Gerber parabola were Analyzed. The calculation of all value and the standard difference of fatigue limit in reliability intensity calculation of Gerber's parabola that one of is directed against among them, the benefit that with the experimental data comparison to fit and portably many than the broken line equation is analyzed the explanation.
出处
《机床与液压》
北大核心
2004年第5期115-116,125,共3页
Machine Tool & Hydraulics
关键词
疲劳强度
疲劳曲线
可靠性
设计
Fatigue strength
Fatigue curve
Reliability
Design
