横截面是椭圆、圆、圆环构件的疲劳分析,直接牵涉到截面在载荷谱中各级循环载荷(简称循环)下的损伤度严重点。分析这类构件常用均匀取点法。其缺点是:(1)通常需要取很多点,计算量大;(2)由于取点是盲目的,精度不高。本文提出一种新的方法——极值法,能克服这些不足。 Fatigue analysis of the elliptical, circular and circular members with cross section is directly related to the serious damage degree of the cross section under the cyclic load (referred to as the cycle) of the load spectrum. Analysis of such components commonly used uniform point method. Its shortcomings are: (1) Usually need to take a lot of points, a large amount of computation; (2) Because the point is blind, the accuracy is not high. This paper presents a new method - the extreme value method, can overcome these deficiencies.