Abstract:
Because the flexibility of a winding angle Filament-wound CFRP tube can be made to design tube components of different mechanical properties, the mechanical and safety performance of a filament-wound CFRP (Carbon Fiber Reinforced Polymer) tube is a basic problem for its analysis and application. Firstly, three different winding angles and slenderness CFRP tubes were tested, the resin base carbon fiber reinforced composite material stiffness, and ultimate strength as well as the mesoscopic damage model were observed. Secondly, based on Chamis C.C. stiffness correction model, tension and compression modulus of constitutive subroutine (Usermat) were developed. Thusly, Chamis C.C. stiffness correction model was imported into the main program of ANSYS. And the Hashin failure of a composite material criterion was used to verify its constitutive model. On this basis, the loading process was simulated. Compared with the experimental results, the constitutive model has good adaptability. Finally, based on the tested and numerical analysis results, a formula to calculate the buckling load of filament-wound CFRP tubes under axially compressive load is obtained.