Transactions of the Institute of Measurement and Control · 1983 · 12 citations · 0 references
EngineeringCivil EngineeringMechanical EngineeringHydraulic EngineeringHydraulicsStructural DynamicsAeroacousticsHydraulic MachineryHydraulic Power SystemsHydraulic Pumping SystemsHydraulic StructuresHydraulic SystemsAirborne NoiseHydraulic NoiseHydraulic VibrationPlane Wave PropagationPositive Displacement PumpsStructural Vibration AnalysisStructural Vibration TransientsWave Theory
This paper discusses the application of plane wave theory to the modelling of pressure ripples generated by positive displacement pumps in high-pressure hydraulic systems. These ripples can lead to structural vibration of pipework and associated components and hence result in airborne noise. A clear understanding of the mechanism of pressure ripple generation is essential in the development of quiet systems. The characteristics of the pump and the circuit components have a considerable influence on the amplitude of the pressure fluctuations. Methods of evaluating these characteristics are described and typical results presented. It is shown that, from a knowledge of these characteristics, the pressure ripple levels at any position in a circuit may be accurately determined using plane wave theory.