Notched response of non-crimp fabric thin-ply laminates: Analysis methods

被引：38
|
作者：
Arteiro, A. [1 ]
Catalanotti, G. [1 ]
Xavier, J. [2 ]
Camanho, P. P. [1 ]
机构：
[1] Univ Porto, Fac Engn, DEMec, Rua Dr Roberto Frias, P-4200465 Oporto, Portugal
[2] Univ Tras Os Montes & Alto Douro, CITAB, P-5001801 Vila Real, Portugal
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2013年 / 88卷
关键词：
Laminate; Fracture; Stress concentrations; FINITE FRACTURE-MECHANICS; STRENGTH; FAILURE; TENSILE; COMPOSITES; CRITERION; STRESS;
D O I：
10.1016/j.compscitech.2013.09.003
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Analysis methods to predict the open-hole tensile and compressive response of thin-ply non-crimp fabric laminates are investigated in this paper. The point- and average-stress models and the Finite Fracture Mechanics model are used. It is shown that all models predict with reasonable accuracy the observed size effects in both tension and compression. The Finite Fracture Mechanics model, which requires two material properties (the unnotched strength and the fracture toughness) and does not need calibration from a baseline specimen, is used to predict the notched response of thin-ply non-crimp fabric laminates and of typical aerospace grade laminates based on unidirectional pre-impregnated plies. No substantial differences in notch sensitivity and inherent material/geometry brittleness is predicted. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：165 / 171
页数：7
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