Bearing Strength of Carbon/Carbon Braided Composites Double Shear Joint

doi:10.3901/JME.2020.18.051

Abstract

Abstract: A comprehensive experimental and numerical evaluation of carbon/carbon (C/C) composites double-shear bolted joint is presented. The effects of the stacked sequence, bolt hole diameter and bolt-torque in joints are examined. Failure loads and failure modes of C/C composites double-shear configurations subjected to tensile loading are obtained and compared. Failure mechanism is analyzed and discussed. A non-linear contact model is developed using ABAQUS. The bolt-torque is realized by heating gasket. A strain-based Hashin failure model is established using VUMAT subroutine. The model effectively predict the progressive damage, failure mode and bearing strength of the C/C braided composite double-shear bolt joints. Based on the analysis model, the stacked sequence and geometric dimension design reference value of C/C braided composite double-shear bolt joints are given, as well as the failure envelope is given.

Key words: carbon/carbon braided composites, bolted joint, strength, failure, finite element analysis

CLC Number:

TB332

TANG Yuling, CHEN Hao, ZHOU Zhengong, ZHANG Yan, GUO Ying. Bearing Strength of Carbon/Carbon Braided Composites Double Shear Joint[J]. Journal of Mechanical Engineering, 2020, 56(18): 51-60.

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