在前一部分,本文得到复合材料蠕变的本构关系,在此基础上,本文进一步分析了复合材料蠕变本构关系的具体形式,实验测得了长纤维增强复合材料在蠕变、恢复两个阶段的应变,以用来确定本构关系中的待定参数,考虑到本构关系为复杂的非线性方程,本文提出了用离散变量和最小二乘法联合的方法确定参数,进而拟合蠕变本构关系的理论公式,分离出了蠕变过程中的弹性变形、粘弹性变形和粘塑性变形,对本构关系中的几个参函数,本文根据有限的实验数据拟合了其函数. In the first part, we get the constitutive relation of the creep of the composite material. On this basis, we further analyze the concrete form of the creep constitutive relation of the composite material, and experimentally measured the creep and recovery of the long fiber reinforced composites Stage of strain to be used to determine the constitutive relationship to be determined parameters, taking into account the constitutive relationship for the complex nonlinear equations, this paper proposed a combination of discrete variables and least square method to determine the parameters, and then fit the creep The theoretical formula of the structure relationship is established, and the elastic deformation, viscoelastic deformation and viscoplastic deformation in the creep process are separated. For several parameters in the constitutive relation, the function is fitted according to the limited experimental data.