Analytical and experimental studies on the low-velocity impact response and damage of composite laminates under in-plane loads with structural damping effects

被引：31

作者：

Choi, Ik-Hyeon ^{[1
]}

Kim, In-Geol ^{[2
]}

Ahn, Seok-Min ^{[1
]}

Yeom, Chan-Hong ^{[1
]}

机构：

[1] Korea Aerosp Res Inst, Aerodynam & Struct Dept, Taejon 305333, South Korea

[2] Chungnam Natl Univ, Dept Aerosp Engn, Taejon 305764, South Korea

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2010年 / 70卷 / 10期

关键词：

Laminate; Impact behavior; Plate theory; Finite element analysis (FEA); Damage mechanics; GFRP;

D O I：

10.1016/j.compscitech.2010.05.007

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

In this paper, low-velocity impact response and damage of composite laminates under in-plane loads are analytically and experimentally investigated. The authors recently proposed a modified displacement field of plate theory, considering the effect of initially loaded in-plane strain, and used a finite element program to analyze the structural behavior of the composite laminate. In this study, the program is upgraded to account for the structural damping effect of the laminate. A pendulum type impact test system and an in-plane loading fixture are constructed for the experimental study. The analytical and experimental impact behaviors are compared at different impact energy levels for cases with an initial in-plane tensile load and a compressive load, as well as cases without the initial in-plane load. The results show good correspondence between the analytical and experimental impact force histories. The effect of the initial in-plane load reduces for higher impact energies. The numerical estimation of the damaged area is in good agreement with the results from C-scanning experiments. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1513 / 1522

页数：10

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