The design and manufacture of highperformance unidirectional composite tubular joints

摘要

This paper considers some of the issues raised in the design and manufacture of truss structures based on the use of unidirectional CFRP tubes. One critical factor in the minimisation of weight is the maximisation of operating strains in the tubular members. To achieve high strain levels without an excessive increment in manufacturing cost requires careful design of the jointing system. Two approaches are reported here, the first relies on a bonded joint, using a constant thickness tube with minimal preparation. The second uses a tapered seat mechanical joint, which adds some cost and complexity to the tube and weight and complexity to the end joint. Results are presented for both types of joint and possibilities for improvement are discussed.