Modelling impact damage in marine composite panels

被引：56
|
作者：
Johnson, H. E. [1 ]
Louca, L. A. [1 ]
Mouring, S. [2 ]
Fallah, A. S. [1 ]
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Dept Civil & Environm Engn, London SW7 2AZ, England
[2] USN Acad, Dept Naval Architecture & Ocean Engn, Annapolis, MD 21402 USA
来源：
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING | 2009年 / 36卷 / 01期
基金：
英国工程与自然科学研究理事会;
关键词：
Woven composites; Impact; Finite element; Damage mechanics; Delamination; FIBER-REINFORCED COMPOSITES; LAMINATED COMPOSITES; POLYMER COMPOSITES; CONSTITUTIVE MODEL; STRAIN RATES; WOVEN GLASS; PART I; FAILURE; DELAMINATION; MECHANICS;
D O I：
10.1016/j.ijimpeng.2008.01.013
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In order to establish the survivability of a composite structure under a dynamic load, it is important to be able to predict the damage incurred and the effect of the contact force. The damage caused by low velocity impact is often hidden and for thicker plates the transverse stresses are significant in promoting delamination. In this study, woven vinyl-ester composite plates up to 1.37 m long are numerically modelled with a simple, gradually damaging three-dimensional material model and the results are compared with full-scale tests. The model is based on damage mechanics principles using cyclic test data to obtain modulus reduction with damage. Delamination is modelled with a mixed-mode traction-separation law using cohesive elements. The nonlinear elastic orthotropic material model for the woven plies is written in a VUMAT in Abaqus/Explicit and the effects of varying some of the modelling parameters are briefly discussed through the examination of the contact force. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：25 / 39
页数：15
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