中文摘要：

聚合物基复合材料的黏弹性导致其力学性能随着服役时间的增加而下降，为了合理设计聚合物基复合材料结构，需要建立时间相关的失效准则。将幂律模型与波尔兹曼叠加原理相结合，以最大应变理论为基础建立了一种时间相关的聚合物基复合材料失效准则，并采用双移位因子法来考虑不同服役条件的影响根据该失效准则，可以获得聚合物基复合材料结构在服役条件下的失效时间或满足设计使用年限要求的最小初始性能参数

英文摘要：

The mechanical property of poly- mer-nlatrix composites （PMCs） structure may decrease with the increase of service time due to viscoelastic. In order to design PMCs structure, time-dependent failure criteria is needed. The power law model and Boltzmann superposition principle are combined. A time-dependent failure criteria for PMCs is established based on the maxi- mum strain theo,＇y. Double shilt factor method is used in the failure criteria to consider the effect of different service conditions. According to this failure criteria, failure time of PMCs structure can be obtained under service condi- tions and the minimum initial parameters which the design requirement can be determined.