Stress response of the hydraulic composite pipe subjected to random vibration

Abstract In this paper, the stress response characteristics of the hydraulic composite pipe subjected to random vibrations were studied. Based on 3D-anisotropy elasticity, the motion equation of the hydraulic composite pipe was established by utilizing the Hamilton principle subjected to random vibration, and takes into account the fluid-structure interaction (FSI). The discrete analysis method of random vibration is employed to solve the random vibration under the excitation of white noise. Also, the effects of different parameters including external excitation, fluid velocity, fluid pressure and structural parameters on the stress response of composite pipe are investigated. Experimental results agreed with the simulation results, demonstrating that the analytical method could provide theoretical reference for the design, improved efficiency, and fatigue reduction of the composite pipe subjected to random vibration.