针对复合材料疲劳损伤的特征 ,将损伤过程分为减速损伤和加速损伤两个阶段 ;基于连续介质损伤力学的概念 ,建立了疲劳损伤演化两阶段模型。并用此模型描述了 Silicone X2 38、Chloroprene、Noryl GTX830等复合材料的疲劳损伤。结果表明 ,提出的两阶段模型与试验结果吻合较好。 According to the characteristics of fatigue damage of composite materials, the damage process is divided into two stages: deceleration damage and acceleration damage. Based on the concept of continuum damage mechanics, a two-stage model of fatigue damage evolution is established. The fatigue damage of composites such as Silicone X2 38, Chloroprene and Noryl GTX830 was also described by this model. The results show that the proposed two-stage model is in good agreement with the experimental results.