Strength Prediction of Notched Woven Composite Plates Using a Cohesive Zone Approach

2013 ◽  
Vol 845 ◽  
pp. 199-203 ◽  
Author(s):  
Hilton Ahmad ◽  
Andrew D. Crocombe ◽  
Paul A. Smith
Keyword(s):  
Cohesive Zone ◽  
Composite Plates ◽  
Woven Fabric ◽  
Woven Fabric Composites ◽  
Damage And Fracture ◽  
Fabric Composites ◽  
Zone Parameters ◽  
Notched Strength ◽  
Fabric Materials ◽  
Good Agreement

The present paper is concerned with modelling damage and fracture in notched woven fabric composites. Previous experimental work has shown that damage at a notch in a variety of GFRP and CFRP composites based on woven fabric reinforcement comprises matrix damage and fibre tow fracture along the plane of maximum stress. It is these experimental observations that inform the failure modelling developed here, in which a cohesive zone approach is used within a 2-D finite element framework. The cohesive zone parameters are based on previously reported experimental measurements for the strength and toughness of the woven fabric materials under investigation. The approach is shown to provide predictions of notched strength that are in very good agreement (less than 11% discrepancy) with experimental results from the literature for a range of GFRP and CFRP woven fabric systems.

Notched Strength of Thermoplastic Woven Fabric Composites

1995 ◽  
Vol 29 (12) ◽  
pp. 1544-1564 ◽  
Author(s):  
R. Marissen ◽  
H. R. Brouwer ◽  
J. Linsen
Keyword(s):  
Woven Fabric ◽  
Woven Fabric Composites ◽  
Fabric Composites ◽  
Notched Strength

A Proposal of Calculation Method for Equivalent Property of Composite Materials

2007 ◽  
Vol 334-335 ◽  
pp. 241-244
Author(s):  
Hiroaki Nakai ◽  
Hiromasa Tomioka ◽  
Tetsusei Kurashiki ◽  
Masaru Zako
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Calculation Method ◽  
Woven Fabric ◽  
Superposition Method ◽  
Woven Fabric Composites ◽  
Traditional Procedure ◽  
Fabric Composites ◽  
Equivalent Property ◽  
Good Agreement

To predict the mechanical properties of composite materials by using computer is complicated, because it is difficult to model directly by ordinary FEM. A calculation method by using the mesh superposition method and periodic boundary condition has been proposed in order to obtain the equivalent mechanical properties of composite materials easily. The numerical results by proposed method have shown good agreement with ones by the traditional procedure. The proposed method is efficient for the materials with complicated structure like woven fabric composites etc.

Notched strength of woven fabric composites with moulded-in holes

Composites ◽  
1987 ◽  
Vol 18 (3) ◽  
pp. 233-241 ◽  
Author(s):  
L.-W. Chang ◽  
S.-S. Yau ◽  
T.-W. Chou
Keyword(s):  
Woven Fabric ◽  
Woven Fabric Composites ◽  
Fabric Composites ◽  
Notched Strength

scholarly journals Structure optimization of woven fabric composites for improvement of mechanical properties using a micromechanics model of woven fabric composites and a genetic algorithm

2021 ◽  
Vol 30 ◽  
pp. 263498332110061
Author(s):  
Gunyong Hwang ◽  
Dong Hyun Kim ◽  
Myungsoo Kim
Keyword(s):  
Mechanical Properties ◽  
Genetic Algorithm ◽  
Elastic Modulus ◽  
Fiber Composite ◽  
Woven Fabric ◽  
Cross Sectional ◽  
Micromechanics Model ◽  
Woven Fabric Composites ◽  
Fabric Composites ◽  
Out Of Plane

This research aims to optimize the mechanical properties of woven fabric composites, especially the elastic modulus. A micromechanics model of woven fabric composites was used to obtain the mechanical properties of the fiber composite, and a genetic algorithm (GA) was employed for the optimization tool. The structure of the fabric fiber was expressed using the width, thickness, and wave pattern of the fiber strands in the woven fabric composites. In the GA, the chromosome string consisted of the thickness and width of the fill and warp strands, and the objective function was determined to maximize the elastic modulus of the composite. Numerical analysis showed that the longitudinal mechanical properties of the strands contributed significantly to the overall elastic modulus of the composites because the longitudinal property was notably larger than the transverse property. Therefore, to improve the in-plane elastic modulus, the resulting geometry of the composites possessed large volumes of related strands with large cross-sectional areas and small strand waviness. However, the numerical results of the out-of-plane elastic modulus generated large strand waviness, which contributed to the fiber alignment in the out-of-plane direction. The findings of this research are expected to be an excellent resource for the structural design of woven fabric composites.

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