断裂力学和有限元法在疲劳磨损研究中的应用

综述了近年来国外应用断裂力学和有限元法研究疲劳磨损的进展和现状。主要评述了以线弹性断裂力学和弹塑性断裂力学理论为基础，借助于有限元法分析疲劳裂纹的萌生、裂纹的扩展方向和扩展速率，以及疲劳磨损机理的热一机械耦合应力分析方法，目前疲劳磨损的研究主要集中于应用断裂力学建立恰当的磨损模型，用有限元法进行参数定量计算和疲劳裂纹行为的数值模拟，但关键问题在于确定合理的有限元分析模型，最后探讨了今后研究的方向。

APPLICATIONS OF FRACTURE MECHANICS AND FINITE ELEMENT METHOD IN FATIGUE WEAR

Achievements of applying fracture mechanics and finite element method to fatigue wear are summarized. The analyses of the crack nucleation, propagation direction and propagation rate during contact fatigue wear by means of the finite element method, which is based on linear elastic fracture mechanics and elastic plastic fracture mechanics, the thermomechanical stress analyses of fatigue wear mechanisms have also been reviewed. Recently, research of fatigue wear is focused on proposing a proper wear model using fracture mechanics and the finite element method to the parameters quantitative calculation and numerical simulation of the fatigue crack behavior. However, the key problem is to establish the reasonable finite element analysis models. Finally,the future directions in the research of fatigue wear have been suggested.