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Research on the Structural Emission Noise of Axial Piston Pump

Author: TongZhangQian
Tutor: XuBing
School: Zhejiang University
Course: Mechanical and Electronic Engineering
Keywords: Axial piston pump Modal Analysis Vibration characteristics Structure-borne noise Noise and vibration reduction Noise source localization Finite Element Analysis Boundary Element Analysis
CLC: TH137.51
Type: Master's thesis
Year: 2012
Downloads: 60
Quote: 0
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Abstract


Engineering almost all devices by the various forms of drive and transmission system, the work process is inevitably accompanied by a variety of specific frequency and amplitude vibration, the vibration exceeds the standard allows not only affects the performance and efficiency of the device, the operator will also be damages health. The hydraulic pump is a hydraulic drive system in the main source of noise, and wherein the axial piston pumps because of its high-pressure high-speed characteristics, has been applied to the high-end equipment, the main pump, the fluid noise and air radiated noise is studied hot spots. For modern high power density than the hydraulic pump, and its structure is lightweight to reduce air radiated noise challenges. How the strength and stiffness constraints, the design and optimization of axial piston pump housing structure to reduce vibration under the conditions of the various excitation source, thereby reducing the radiated noise is an important research direction. In this thesis, the content is as follows: the first chapter, an overview of the axial piston pump vibration noise and digital simulation technology in the axial piston pump vibration and noise reduction work; domestic and foreign research based on the axial piston pump vibration and noise reduction work; determine the content of this research, and pointed out that the research significance. The second chapter, the establishment of virtual prototype simulation model of an axial piston pump, including its dynamic model and hydraulic model; axial piston pump internal vibration transmission path and exciting analysis and research; simulation model based on virtual prototyping exciting force analysis and solution of the structure of the outer surface of the axial piston pump. Chapter to establish the finite element model of the axial piston pump outer surface of the structure, its modal analysis and vibration response characteristics analysis; establish the boundary element model of the structure of axial piston pump outer surface, its structure of noise radiation analysis. Chapter comprehensive analysis of the results of the first few chapters of the axial piston pump outer surface of the structure to optimize the structure of work; compared based on the vibration characteristics of the structural strength and structural noise radiation on the outer surface of the structure optimization analysis and research. Fifth chapter, an overview of the sound intensity measurement theory and experimental study of the structure of the system by the motor, bell housing and hydraulic pump noise source localization test. Determine the hydraulic system of the main noise source: Chapter of the full text summary Next outlook.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanical parts and gear > Hydraulic transmission > Hydraulic components > Hydraulic motors,hydraulic cylinders and pumps
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