Abstract:

According to the manufacturing characteristics of tubular filament wound products and based on the basic parameters such as dry fiber tow cross-section area,fiber volume fraction,mandrel geometric parameters and the turning numbers of mandrel during one lay-up carriage,the paper presents a tube-wall thickness calculation method.Then,according to the circumferential uniform stiffness and axis-symmetrical properties of filament wound tubes,an tube-wall element model for analyzing a filament wound tube under tensile,shear,bending and torsional loadings is presented.Finally,the tube-wall thickness calculation method and the tube-wall element analysis model are used to filament wound tubes.The theoretical calculation results are compared with the experimental and FEM numerical results,and have good agreements.

Key words: filament wound, tube, tube-wall thickness, tube-wall element, analysis model