Geometric modeling of 3D woven preforms in composite T-joints

Yan, Shibo and Zeng, Xuesen and Brown, Louise and Long, Andrew (2017) Geometric modeling of 3D woven preforms in composite T-joints. Textile Research Journal . 004051751771209. ISSN 0040-5175

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Abstract

A common method to fabricate net-shaped three-dimensional (3D) woven preforms for composite T-joints is to weave flat 3D preforms via a standard weaving machine with variation in binder yarn path and then separate the preform in the form of a bifurcation. Folding introduces fiber architecture deformation at the 3D woven bifurcation area. In this paper, a geometric modeling approach is proposed to represent the realistic fiber architecture, as a preprocessor for finite element analyses to predict composite structural performance. Supported by X-ray micro-computed tomography (mCT), three important deformation mechanisms are observed including yarn stack shifting, cross-section bending, and cross-section flattening resulting from the folding process. Furthermore, a set of mathematical formulae for simulation of the deformations in the junction region are developed and satisfactory agreement is observed when compared with mCT scan results.

Item Type: Article
Keywords: T-joint, 3D woven fabrics, geometric modeling, deformation
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
Identification Number: 10.1177/0040517517712098
Depositing User: Eprints, Support
Date Deposited: 09 Jun 2017 12:37
Last Modified: 13 Oct 2017 00:12
URI: http://eprints.nottingham.ac.uk/id/eprint/43490

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