Research progress on influence factors of the mechanical properties of fiber-reinforced composite bolted joints

doi:10.19936/j.cnki.2096-8000.20260228.019

Abstract

Abstract: Bolted connections have been widely used in the field of aerospace due to their efficient and reliable connection performance. However, some issues, including delamination defects, perpendicularity errors, inevitably occur during the processing of holes in fiber-reinforced composite plates. Besides, the systematic and manual errors can also lead to the inappropriate preload or the existence of assembly gaps during the assembly process. Such will significantly affect the mechanical properties of bolted joint structure. In this work, we summarized four general influential factors on the properties of fiber-reinforced resin matrix composite bolted joints in machining and assembly processes: delamination defect, perpendicularity error, preload force and assembly gap. Meanwhile, their effects on mechanical properties and the corresponding reactional mechanisms have been systemically discussed. Moreover, we also proposed the future tendency of the factors affecting the mechanical properties of fiber-reinforced composite bolted joints.

Key words: composites, bolted joints, delamination defects, perpendicularity error, preload, assembly gap

CLC Number:

TB332

ZHANG Yongliang, ZHANG Hui, YUAN Yi, WANG Xiaolong, YANG Xudong. Research progress on influence factors of the mechanical properties of fiber-reinforced composite bolted joints[J]. COMPOSITES SCIENCE AND ENGINEERING, 2026, 0(2): 135-144.

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