非稳定变应力下疲劳强度计算的等效循环次数法的修正

The correction of the method of equivalent cycle number

对疲劳强度理论中的等效循环次数Nv 的计算和寿命系数KN的取值进行了讨论 ,指出了存在的问题 ,并对这两个系数的计算和取值进行了修正。

The calculation of equivalent cycle number N v and life coefficient K N are discussed based on the fatigue strength theory of machine element,and the problem in the calculation is indicated in the paper. The calculational method of the two parameters is corrected reasonably. The calculation of fatigue strength is improved in the regular and changing stress.