复合材料螺栓连接结构的失效行为

doi:10.12066/j.issn.1007-2861.2049

Abstract

Abstract:

Bolt joints are the most commonly used connections, but they are often the weakest part in those structures. Therefore, to ensure the safety of aircraft structures, evaluating failure load in composite bolted joint is necessary. Based on Hashin failure criteria, a 3D finite element (FE) model of a composite single-lap countersunk bolted joint was developed to study the damage effects. Numerical analysis was conducted by employing UMAT which was developed from Fortran Language and implemented via Abaqus. Based on the parametric studies of coefficient of friction, bolt-hole clearance and bolt load, the impact of parameters on the failure load of composite bolted joint was analyzed, and numerical results were compared with experimental results, to provide the reference for the installation and design of composite bolted joints.

Key words: bolted joints, composite materials, failure load, Hashin failure criteria

CLC Number:

TB330.1

Xuhui TANG, Shunqi ZHANG, Shenshun YING, Min CHEN. Failure behavior for composite bolted joints[J]. Journal of Shanghai University（Natural Science Edition）, 2019, 25(4): 502-515.

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Failure behavior for composite bolted joints

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