单面螺纹抽钉干涉配合复合材料连接件挤压强度研究

doi:10.7527/S1000-6893.2013.0280

Abstract

Abstract:

Since the join technology is the key link of the structural design of composite connection, an investigation is conducted to study the effect of interference fit on the bearing strength of composite single-bolt double-lap joints, and a three-dimensional finite element model is developed to predict the bearing strength of composite bolted joints with different sizes of interference fit, taking into account the bolt-hole connection, progressive damage, and large deformation theory. To predict progressive ply failure, Hashin failure criteria and Tan degradation rules are employed. This model considers the effects of different interference sizes (0%, 0.5%, 3%) on the bearing strength and stiffness of composite joints. Results show that appropriate sizes of interference can improve the bearing strength of joints. However, the joints of 3% excessive interference fit have lower bearing strength and higher bearing stiffness. Good agreement between experimental results and numerical predictions is observed.

Key words: composites, blind bolt, interference fit, fastened joint, progressive damage

CLC Number:

V222
TB332

WEI Jingchao, JIAO Guiqiong, YAN Zhaoming, LIU Fenglei. Bearing Strength of Composite Joints Interference-fitted with Blind Bolts[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013, 34(7): 1627-1635.

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Bearing Strength of Composite Joints Interference-fitted with Blind Bolts

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