Simulation and optimized layout analysis of hydraulic power system in aircraft

Abstract

Aiming at the problems of vibration on hydraulic pipe in aircraft, using math modeling and simulation is a quite efficient and effective method in theory. In this paper, the 14-equation Fluid-Structure Interaction (FSI) with influence of viscous friction is established for modeling the pipe and fluid. By using the Transfer Matrix Method (TMM), the components and pipelines are connected to get the simulation results of resonance frequency points and dynamic impedance of system. Our simulation demonstrates that most of the flow fluctuation between the natural frequencies of pump is absorbed by bumper; the vibration of high-frequency is damped if the filter is set in front of the pipeline system, and the vibration-absorbing effect of hose is better than pipe or hose-pipe-hose followed the pump.