Based on Continuum damage Mechanics, a general two stage model for accumulationoffatiguedamage in composite materials is presented.
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。
2
The fatiguedamageof the metal material often happens under the action of the dynamic load. The accumulationoffatiguedamage of the metal material leads to the result of surface fatigue cracks.
金属构件常常因受到动载荷作用引起疲劳损伤，而疲劳损伤累积的结果往往导致裂纹的产生。
3
According to fatiguedamageaccumulation theory, test load of verified fatigue test on rail across beam and welded connections with integral joint of combined steel truss bridge was gotten.