Title: On the calculation of the macroscopic stiffness of 2D triaxially braided composites

Authors: Yifei Liu; Wei Ye; Huiming Ning; Ning Hu

Addresses: College of Aerospace Engineering, Chongqing University, Chongqing 400044, China ' College of Aerospace Engineering, Chongqing University, Chongqing 400044, China ' College of Aerospace Engineering, Chongqing University, Chongqing 400044, China ' College of Aerospace Engineering, Chongqing University, Chongqing 400044, China

Abstract: The elastic property of 2D triaxially braided composites (2DTBC) is of interest. This work proposes to formulate the global stiffness of 2DTBC for anisotropic fibre reinforcement based on concentric cylinder model (CCM). The results of the global stiffness from CCM, Quek's model and Shokrieh's model are compared and the usage of each model is clarified. It is found that Shokrieh's model predicts less agreeable result with experiment due to the improper calculation of the local stiffness. The results of CCM and Quek's model are consistent and either one is recommended for use in practical situations.

Keywords: braided composites; concentric cylinder model; elastic property; CFRP; carbon fibre reinforced polymer; GFRP; glass fibre reinforced polymer.

DOI: 10.1504/IJAUTOC.2018.094857

International Journal of Automotive Composites, 2018 Vol.4 No.1, pp.15 - 27

Received: 02 Sep 2017
Accepted: 06 Dec 2017

Published online: 21 Sep 2018 *

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