等幅载荷下的有限寿命疲劳设计方法  

The fatigue design method of finite life under loading of coustant amplitude

作　　者：赵少汴[1] 

机构地区：[1]机械工业部郑州机械研究所先进制造技术研究中心,河南郑州450052

出　　处：《机械设计》1999年第12期3-5,共3页Journal of Machine Design

摘　　要：本文论述了等幅款待下的有限寿命疲劳设计方法，研究了非对称循环下的疲劳寿命估算方法和疲劳强度评价方法，推导出了各种非对称循环下的疲劳强度判据和计算应力表达式。并用4种零件进行疲劳试验．对提出的疲劳强度评价方法的精度和安全性进行了验证。This paper discussed the fatigue design methodof finite life under loading of constant amplitude,studied theevaluation method of fatigue life and the appraisement methodof fatigue strength under non-symmetrical cycle. It derivedthe criteria of fatigue strength and the expression of stress cal-culation under various kinds of mon-symmetrical cysle. Finallythe accuracy and safety property of the advanced assessmentmethod for fatigue strength have been verified by fatigue testcarried on four kinds of components.

关 键 词：疲劳强度评价 疲劳寿命估算 等幅载荷 机械产品 

分 类 号：TH114[机械工程—机械设计及理论]