浅谈金属材料疲劳寿命的研究进展

Discussion on the Researching Progress about Fatigue Life of Metal Material

影响金属材料疲劳寿命的因素很多,使得预测疲劳寿命十分复杂,目前预测方法主要有:名义应力法,局部应力应变法,断裂力学法等。简述了当前国内外在这方面的研究进展,以及疲劳寿命预测在结构寿命设计及损伤容限设计上的重要意义。

There are many objectives affect the metal material fatigue life,they made the fatigue life prediction quite complicate.Nowadays,the prediction methods are nominal stress method,local stress-strain method,fracture force mechanics method,etc.This paper introduced the recent researching progress in the world,and introduced the important significance of fatigue life prediction in structure life design and damage limitation design.