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Mesoscale geometric modelling of bifurcation in 3D woven T-beam preforms

Brown, Louise P.; Yan, Shibo; Zeng, Xuesen; Long, Andrew C.

Authors

Xuesen Zeng xuesen.zeng@nottingham.ac.uk

Andrew C. Long



Abstract

Manipulation of the through-thickness yarn path enables 3D woven reinforcement to separate locally in the form of a bifurcation, creating net-shaped preforms for T- and I-beams. Preforming introduces fibre architecture deformation at the 3D woven bifurcation area. We report a geometric modelling approach to represent the realistic fibre architecture, as a preprocessing tool for finite element analyses. The study started with x-ray micro-computed tomography (µCT) of two 3D woven T-beams varying only by their yarn path at the T-junction area. Supported by the µCT image analysis, a set of mathematical formula were proposed to describe the identified features in the 3D woven T-beams. We then moved on to implement the automated modelling procedure in the open-source software TexGen. Using the weave pattern as input data, TexGen first simulates as-woven flat T-piece. Next, TexGen applies geometric transformation and refinements to simulate the preforming process of T-beams. The paper highlights an efficient approach to model the complex woven bifurcation structure at mesoscale.

Publication Date May 26, 2015
Peer Reviewed Not Peer Reviewed
APA6 Citation Brown, L. P., Yan, S., Zeng, X., & Long, A. C. (2015). Mesoscale geometric modelling of bifurcation in 3D woven T-beam preforms
Keywords 3D woven composites, geometric modelling, T stiffener
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

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TEXCOMP-12_full-paper_MESO-SCALE GEOMETRIC MODELLING OF BIFURCATION IN 3D WOVEN T-BEAM PREFORMS 2.pdf (1.2 Mb)
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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