Based On Fluid-structure Coupling Vibration ANSYS Workbench Aviation Engine Hydraulic Piping Systems

Aero-engine hydraulic piping system is mainly used to transport fuel, hydraulic oil and other fluid. Pipeline forms, connected to each other through the clamp, occupy a larger proportion of the entire pipeline system in the engine. The working environment of the entire pipeline system is complex, not only by the impact of the pulsating pump itself, but also affected by the engine when considering engine unbalanced rotating, incomplete combustion and other factors, exacerbated by the destruction of the piping system. Thus, fluid-structure coupling vibration characteristics of its hydraulic piping systems for improving the overall security aero-engine plays a decisive role.The purpose of this paper is to make sure of the the vibration mechanism of the hydraulic piping system to address cracks and leakage of hydraulic lines, and to improve reliability of aircraft engines. Firstly, establish equations of an aviation engine hydraulic piping system fluid-structure interaction, using matlab to solve the theoretical value, at the same time, use Ansys Workbench to make numerical simulation based on Ansys Workbench in order to verify the reliability of the numerical simulation. Then, based on Ansys Workbench platform, fluid-structure interaction characteristics of a single tube conveying fluid simulation is discussed. Select representative pipes of single one, take the tapered tube lines and a T-shaped pipe for example, to disscuss the impact of pipe size liquid flow rate, fluid pressure on the natural frequency of the road system; while the above two lines carry harmonic analysis, harmonic response curves plotted and analyzed. Transport stream research process and single-tube studies is probably similar escept for different geometric models. By introducing harmonic response analysis, vibration can accurately simulate the engine itself for aviation hydraulic piping system vibration impact, closer to the actual engineering, playing a important role in piping system design and pipeline laying.This paper has further innovation and extension in the study of pipeline system of fluid-solid coupling, due to the introduction of the new model and the introduction of a new research angle, contributing to the design of the piping system and piping system coupling, and further boost reliability analysis, etc.