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A new geometric modelling approach for 3D braided tubular composites base on Free Form Deformation

Wang, Yi-bo and Liu, Zhen-guo and Liu, Nian and Hu, Long and Wei, Yu-chen and Ou, Jia-jun (2016) A new geometric modelling approach for 3D braided tubular composites base on Free Form Deformation. Composite Structures, 136 . pp. 75-85. ISSN 0263-8223 . http://resolver.caltech.edu/CaltechAUTHORS:20160318-093341237

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Abstract

The micro-geometry of three-dimensional (3D) braided tubular preform is more complex than that of rectangular one, especially for the interfaces between yarns. The yarn interfaces are difficult to analyze theoretically, and if two sides of the interfaces do not fit perfectly in the model, the final result will contain overlapped yarns, which is bad for finite element calculation. This paper focuses on the microstructure of 3D four-directional braided tubular composites and presents a modelling approach based on Free Form Deformation (FFD) theory. First, the planar and spatial yarn paths are analyzed and three geometrical mapping equations from rectangular unit-cell to tubular sub unit-cell are derived. The modelling approach was then developed to establish the sub unit-cell model. Finally, the established models are compared with micro computed tomography (μ-CT) scans of a dry specimen of the circular braided preform. The model not only solves the yarn-overlapping problem, but also accurately describes the key characteristics of the preform.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.compstruct.2015.09.036DOIArticle
http://www.sciencedirect.com/science/article/pii/S026382231500882XPublisherArticle
http://dx.doi.org/10.1016/j.compstruct.2015.12.010ErrataErratum
http://www.sciencedirect.com/science/article/pii/S0263822315011009ErrataErratum
Additional Information:© 2015 Elsevier Ltd.
Subject Keywords:3-Dimensional reinforcement; Microstructures; Radiography
Record Number:CaltechAUTHORS:20160318-093341237
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160318-093341237
Official Citation:Yi-bo Wang, Zhen-guo Liu, Nian Liu, Long Hu, Yu-chen Wei, Jia-jun Ou, A new geometric modelling approach for 3D braided tubular composites base on Free Form Deformation, Composite Structures, Volume 136, February 2016, Pages 75-85, ISSN 0263-8223, http://dx.doi.org/10.1016/j.compstruct.2015.09.036. (http://www.sciencedirect.com/science/article/pii/S026382231500882X)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:65475
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:18 Mar 2016 16:39
Last Modified:15 Jun 2018 18:34

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