期刊
COMPOSITES PART B-ENGINEERING
卷 58, 期 -, 页码 25-34出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2013.10.017
关键词
Polymer-matrix composites (PMCs); Finite element analysis (FEA); Joints/joining
资金
- Turkish Council of Higher Education (YOK)
A strength prediction method is developed for bolted joints in CFRP composite laminates using cohesive zone elements (CZEs). Three-dimensional finite element models were developed with one element per laminate layer using the ANSYS software (ANSYS, 2009) [1]. CZEs were embedded into the subcritical (matrix based) damage locations that were determined from the X-ray radiographs as detailed in Atas and Soutis (2013) [2]. CZEs use a strength-based failure criterion to predict the onset of damage and a fracture mechanics based approach to predict its growth. The material properties required to simulate the subcritical damage modes were the interfacial strength, fracture energies and the nonlinear shear stress-strain behaviour of the particular material system used. The strength of the joints was determined through the load-displacement curves of the cross-ply laminates and by a simple maximum stress criterion for the quasi-isotropic specimens. It has been shown that the effect of various joint geometries and laminate lay-ups on the joint strength was accounted for by the method developed. (C) 2013 Elsevier Ltd. All rights reserved.
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