摘要
根据现有的疲劳理论及Ｍｉｎｅｒ理论，定义了能反映影响疲劳损伤的主要因素的应力循环的一次循环的疲劳损伤量δ和零件的疲劳损伤累积强度Ｋ，建立了一种疲劳损伤累积理论的新表达方法。用该方法可以方便地进行常规疲劳计算，计算结果令人满意。
According to the available fatigue fheory and Miner's fheory,this paper defines the one circle fatigue damage δ and the cumulative fatigue strength K of parts, which deal with the main factors affecting fatigue damage of stress circles,and presents a new method describing the theory of the cumulative fatigue damage. As conpared with fhe conventional method,this method has the advantages of less computation,easier use and more suitability.
