机织结构预成型体本构关系和剪切性能

综述了国内外纺织预成型体的剪切性能及其本构关系的研究进展。在简要介绍机织预成型体的分类及其结构和特性的基础上,从实验方法、本构关系以及变形模拟等方面概述了纺织预成型体剪切性能的研究进展,对比分析了纺织预成型体剪切性能的测试方法,描述了纺织预成型体剪切变形的几何非线性和材料非线性的特征,总结了纺织预成型体的本构模型以及可成型性数值模拟方面的研究成果,并提出了目前存在的问题和今后的发展方向。

Constitutive Relationships and Shear Properties of Woven Preforms

This paper reviews the researches on the constitutive relationships and shear performances of woven
preforms. Firstly, the classifications of the woven preforms are introduced, and the structures and properties of 3D woven preforms are analyzed. Then, the recent progresses of research related to the woven preforms are reviewed from the viewpoints of experimental method, constitutive theory and deformation simulation. The typical non-linear charac-teristics of the textile preforms are described, several models of constitutive relationship of woven preforms are introduced, and the progresses on the simulation of the fabric formability are reviewed. Finally,the existing problems and the investigation tendency of 3D textile performs are proposed.