中文摘要：

基于剩余强度和剩余刚度取决于同一损伤状态的假设，给出了基于剩余刚度的损伤定义和基于剩余强度的损伤定义之间的关系，建立了剩余刚度一剩余强度关联模型。用3种不同铺层形式的层压板试验数据对本文中提出的剩余刚度模型及剩余强度模型进行了验证。结果表明：本文中提出的剩余刚度和剩余强度模型能很好地描述复合材料层压板疲劳过程中的剩余刚度和剩余强度退化规律；通过关联模型，可以在已知剩余刚度退化规律的前提下，用少量剩余强度试验确定剩余强度退化规律；与剩余刚度关联的剩余强度模型中的参数可以被认为是材料常数。

英文摘要：

A coupled model of residual stiffness-residual strength was presented under the assumption that the strength and stiffness of the laminates are degraded in fatigue process due to the same damage modes at the same time. A relationship between the damage defined by residual stiffness and that defined by residual strength was set up. The coupled model was validated by the experimental results of three kinds of laminates with different stacking sequences. The results show that the residual stiffness model and residual strength model presented in this paper are applicable to describe the stiffness and strength degradation rules. The strength degradation rule can be easily determined by only a few specimens based on this coupled model. And the parameter in the strength degradation model can be regarded as a material constant.