预浸机织织物的本构关系

 预浸机织织物是一种未固化的织物复合材料，其性质既不同于纯织物材料也不同于固化后的织物复合材料，具有独特的力学性质。根据连续介质力学的理论，结合预浸织物的非线性的黏弹性特性，从代数不变量出发，推导了预浸织物的本构方程。同时对描述预浸织物性能的像框剪切试验的步骤及方法做了阐述。通过像框剪切试验的结果与本构方程的对比，验证了本构方程的正确性，该方程较好地描述了预浸积物的性质。本构方程的导出为研究空间充气结构的静态、动态及热分析奠定了一定的理论基础。

Constitutive Relation of Pre-impregnated Woven Fabric Composite

The pre-impregnated woven fabric composite is a kind of uncured composite material.The pre-impregnated woven fabric composite has its own properties which are not similar to those of the fabric or the fabric reinforced composite because of the existence of the uncured resin.A constitutive equation is based on the theory of continuum mechanics,considering the nonlinear viscoelasticity,and following the theory of algebraic invariants.At the same time,the process and method of picture frame experiment are formulated.A picture frame experiment is performed to testify the verification of the constitutive equation.The results show that the equation can explain the properties of the material well.Investigation on the constitutive equation of pre-impregnated woven fabric composite is of great significance on the static,dynamic and thermal analyses of space inflatable structures.