Models for the strain-rate-dependent behavior of polymer composites

被引：153

作者：

Thiruppukuzhi, SV ^{[1
]}

Sun, CT ^{[1
]}

机构：

[1] Purdue Univ, Sch Aeronaut & Astronaut, W Lafayette, IN 47907 USA

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2001年 / 61卷 / 01期

关键词：

laminates; thick sections; joints; adhesive bonding; finite elements;

D O I：

10.1016/S0266-3538(00)00133-0

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The present study aims at characterizing the rate-dependent non-linear behavior of two polymeric composite material systems, the unidirectional S2-glass/8553-40 and the woven 7781/F155 E-glass fabric in the range of 0.0001 to 1/s under monotonic and proportional loading situations. The objective is to develop a viscoplasticity and a rate-dependent failure model. Uniaxial tension tests were conducted on various off-axis coupon specimens to obtain stress/strain curves for various strain rates. A three-parameter constitutive model is proposed to fit the experimental data. A single rate-dependent parameter is shown to be adequate for capturing the effect of strain rate on strength in both the unidirectional and the woven material systems. (C) 2000 Elsevier Science Ltd. AII rights reserved.

引用

页码：1 / 12

页数：12

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