Numerical simulation on winding CFRP pipe axial compression stability

Bo Nan*, Yue Wu

School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

Because of the requirements of strict weight, airship structures are usually built by high strength and light-weight CFRP composite truss, CFRP composite tube is the basic unit of it. Winding CFRP tube ultimate bearing capacity has been further improved by combinations of various fiber directions, while stable bearing capacity is an important indicator that could influence the bearing characteristics. It concludes the destruction and deformation characteristics, as well as the relationship between stability factor Φ and slenderness λ, through analysing different CFRP tubes of slenderness ratio with The arc-length method, and drawing the Load-displacement curve, which provided a theoretical basis to better the truss design, and discussed the laws of how component defects affect its stability capacity via a large number of parameters.