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Title: Braided textile composites for sports protection: Energy absorption and delamination in impact modelling
Authors: Wang, Chen
Roy, Anish
Chen, Zhong
Silberschmidt, Vadim V.
Keywords: Braided composite
Low-velocity impact
Cohesive zone
Energy absorption
Finite-element model
Multi-scale model
Issue Date: 2017
Publisher: © Elsevier
Citation: WANG, C. ... et al, 2017. Braided textile composites for sports protection: Energy absorption and delamination in impact modelling. Materials and Design, 136, pp. 258-269.
Abstract: Composites reinforced with braided textiles exhibit high structural stability and excellent damage tolerance, making them ideal materials for use in sports-protection equipment. In sports impact scenarios, braided composites need to maintain their structure integrity and dissipate impact energy to protect a human body. Thus, it is crucial to study the dynamic response of a composite structure and its energy-dissipation mechanisms. Here, a multi-scale computational approach was explored to capture main damage modes of a braided textile composite; simulations were supported by experimental verification. A drop-weight test was performed with a spike-shape impactor to imitate real-life sports impact collision scenarios, followed by X-ray computed micro-tomography to characterize damage morphology of the specimen. The experimental results were compared with analytical models. The extent of delamination was quantified by applying surface- and element-based cohesive zone models. A ply-level model with three-dimensional continuum and shell elements was employed to explore the effect of through-thickness failure modes on energy absorption of the composite. The propagation mechanism of matrix cracks is also discussed. In addition, with the developed model, impact-attenuation performance of a shin-guard structure was simulated. The presented modelling capability can improve design of braided composite structures for sports and other protective and structural applications.
Description: This paper is closed access until 4th October 2018.
Version: Accepted for publication
DOI: 10.1016/j.matdes.2017.10.006
URI: https://dspace.lboro.ac.uk/2134/27544
Publisher Link: https://doi.org/10.1016/j.matdes.2017.10.006
ISSN: 0264-1275
Appears in Collections:Closed Access (Mechanical, Electrical and Manufacturing Engineering)

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