A CONNECTION METHOD OF CFRP PIPES FOR RIGID STRUCTURE OF A STRATOSPHERIC AIRSHIP

Abstract

Abstract: With excellent mechanical properties, Carbon Fiber Reinforced Plastic (CFRP) has been widely used in the field of aerostats. According to the engineering requirements of a stratospheric airship project, this paper conducts a preliminary research on the connection problem of CFRP pipes for rigid structure of an airship. In view of the existing problems about connection methods of CFRP pipes, three simple connection methods-flange joints, slotted joints and tenon-mortise joints, were tested and analyzed under axial tension. Based on the results, a new connection method with threaded casing joints was proposed. The advantages of this method were verified by experiment and finite element analysis. As the rigid structural members of a stratospheric airship, it can fulfill the requirements of the tensile properties and the structural requirements. Meanwhile, it has the advantages of easy installation and disassembly. As a result, it solves the engineering requirements of the stratospheric airship project.

Key words: carbon fiber reinforced plastic, pipe connection, tensile strength, assembly, finite element

CLC Number:

TB332

XIAO Chang, CHEN Yong-lin, LI Shuai, FU Gong-yi. A CONNECTION METHOD OF CFRP PIPES FOR RIGID STRUCTURE OF A STRATOSPHERIC AIRSHIP[J]. Composites Science and Engineering, 2020, 0(6): 89-94.

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