Transverse shear modulus of unidirectional composites with voids estimated by the multiple-cells model

被引：11

作者：

Tai, Jui-He ^{[1
]}

Kaw, Autar ^{[2
]}

机构：

[1] Univ S Florida, Dept Chem & Biomed Engn, 4202 East Fowler Ave,ENB 118, Tampa, FL 33620 USA

[2] Univ S Florida, Dept Mech Engn, 4202 East Fowler Ave,ENB 118, Tampa, FL 33620 USA

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2018年 / 105卷

关键词：

Polymer-matrix composites (PMCs); Defects; Mechanical properties; Finite element analysis (FEA); MECHANICAL-PROPERTIES; ELASTIC PROPERTIES; STRENGTH;

D O I：

10.1016/j.compositesa.2017.11.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Voids are inevitably formed as a by-product during manufacturing processes of composite materials and affect many of its mechanical properties including the transverse shear modulus. Although several analytical and empirical models are available for transverse shear modulus, they are based on simple assumptions, and none of them consider the effect of voids. In this work, we estimate transverse shear modulus through a finite element model that uses multiple-cells and three-dimensional analysis. The effect of voids on the transverse shear modulus is studied through a design of experiment approach via three primary parameters: fiber-to-matrix Young's moduli ratio, fiber volume fraction, and void volume fraction. The results indicate that for allowable void volume fractions, the transverse shear modulus can decrease by as much as 15%, while the fiber volume fraction is the most dominating factor of the three in influencing its value. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：310 / 320

页数：11

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