Abstract
The aim of this paper is to demonstrate the mechanical behaviour of a filament-wound composite tube subjected to uniaxial tension by finite element analysis. Uniaxial tensile test experiments have been carried out on standard specimen and hose piece in order to verify finite element models and material properties and also to assess failure mode of composite plies. Composite reinforcement plies are modeled as linear orthotropic, while elastomer liners are described by hyperelastic material model. Results of finite element models and experiments show good agreement in the initial phase of uniaxial tension, which justifies utilized material models in the operating range. Results of finite element models show that transverse tension and shear load are dominant under tension. It is determined that principal failure mode of reinforcement plies is intra-ply yarn-matrix debonding caused by intensive shear of rubber matrix.
Highlights
Composite tubes find extensive use in numerous different industrial fields; in transportation, oil industry, aerospace and aeronautical applications [1]
The aim of this paper is to demonstrate the mechanical behaviour of a filament-wound composite tube subjected to uniaxial tension by finite element analysis
Results of finite element models show that transverse tension and shear load are dominant under tension
Summary
Composite tubes find extensive use in numerous different industrial fields; in transportation, oil industry, aerospace and aeronautical applications [1]. Among manufacturing processes of composite tubes, filament winding is prominent because of high precision fibre positioning, high fibre content, low void content and good automation capability [2]. For balancing the internal forces, angles of ±Θ are generally adopted [4]. Optimal winding angles depend on the expected loading cases [5]. When solely internal pressure is applied the optimal winding angle is ±75 ̊, when loading is purely uniaxial winding angle needs to be as low as possible—taking into account manufacturing considerations, in case of combined internal pressure and axial loading—where ratio of circumferential to axial stress is 2:1, ±55 ̊ is adopted [6], [7]. Rubber matrix gives the composite material favourable deformability, high flexibility and toughness
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