Strain Rate Dependent Deformation of a Polymer Matrix Composite with Different Microstructures Subjected to Off-Axis Loading

被引：2

作者：

Zhu, Xiaojun ^{[1
]}

Chen, Xuefeng ^{[1
]}

Zhai, Zhi ^{[1
]}

Yang, Zhibo ^{[1
]}

Li, Xiang ^{[1
]}

He, Zhengjia ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China

来源：

MATHEMATICAL PROBLEMS IN ENGINEERING | 2014年 / 2014卷

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

MICROMECHANICAL ANALYSIS; FAILURE ANALYSIS; BEHAVIOR; MODEL; IMPLEMENTATION; TENSILE; CELLS;

D O I：

10.1155/2014/590787

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper aims to investigate the comprehensive influence of three microstructure parameters (fiber cross-section shape, fiber volume fraction, and fiber off-axis orientation) and strain rate on the macroscopic property of a polymer matrix composite. During the analysis, AS4 fibers are considered as elastic solids, while the surrounding PEEK resin matrix exhibiting rate sensitivities are described using the modified Ramaswamy-Stouffer viscoplastic state variable model. The micromechanical method based on generalized model of cells has been used to analyze the representative volume element of composites. An acceptable agreement is observed between the model predictions and experimental results found in the literature. The research results show that the stress-strain curves are sensitive to the strain rate and the microstructure parameters play an important role in the behavior of polymer matrix.

引用

页数：11

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