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Materials 2017, 10(10), 1184; doi:10.3390/ma10101184

A Mesoscopic Analytical Model to Predict the Onset of Wrinkling in Plain Woven Preforms under Bias Extension Shear Deformation

1
Department of Mechanical Engineering, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
2
Advanced Fibrous Materials Laboratory, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
3
Composites Research Network-Okanagan Laboratory, School of Engineering, University of British Columbia, Kelowna, BC V1V 1V7, Canada
*
Authors to whom correspondence should be addressed.
Received: 15 September 2017 / Revised: 7 October 2017 / Accepted: 8 October 2017 / Published: 16 October 2017
(This article belongs to the Special Issue Modeling and Simulation of Advanced Composite Materials)
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Abstract

A mesoscopic analytical model of wrinkling of Plain-Woven Composite Preforms (PWCPs) under the bias extension test is presented, based on a new instability analysis. The analysis is aimed to facilitate a better understanding of the nature of wrinkle formation in woven fabrics caused by large in-plane shear, while it accounts for the effect of fabric and process parameters on the onset of wrinkling. To this end, the mechanism of wrinkle formation in PWCPs in mesoscale is simplified and an equivalent structure composed of bars and different types of springs is proposed, mimicking the behavior of a representative PWCP element at the post-locking state. The parameters of this equivalent structure are derived based on geometric and mechanical characteristics of the PWCP. The principle of minimum total potential energy is employed to formluate the model, and experimental validation is carried out to reveal the effectiveness of the derived wrinkling prediction equation. View Full-Text
Keywords: fabrics/textiles; mechanical properties; analytical modelling; wrinkling initiation fabrics/textiles; mechanical properties; analytical modelling; wrinkling initiation
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Hosseini, A.; Kashani, M.H.; Sassani, F.; Milani, A.S.; Ko, F. A Mesoscopic Analytical Model to Predict the Onset of Wrinkling in Plain Woven Preforms under Bias Extension Shear Deformation. Materials 2017, 10, 1184.

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