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Attenuation of fluid borne noise from hydraulic piston pumps
The Journal of the Acoustical Society of America, 1997In many hydraulic systems, fluid borne noise is generated during operation due to the effects of the hydraulic piston pump. This fluid borne noise is transmitted to various structures of the hydraulic system which emit vibrations that create the largest portion of the system air borne noise.
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In-line syntactic-foam device for control of water hammer and fluid-borne noise
The Journal of the Acoustical Society of America, 2019Water hammer, a common problem in plumbing, is characterized by an impulsive increase in pressure. The pressure rise and associated momentum transfer may cause plumbing noise and vibration, and, potentially, catastrophic plumbing component failures. Water hammer arresters are required in building codes to be proximate to fast-acting valves, such as ...
Kenneth Cunefare +2 more
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Method and apparatus for reduction of fluid borne noise in hydraulic systems
The Journal of the Acoustical Society of America, 1999Method and apparatus for reduction of fluid borne noise in a hydraulic system are disclosed. The apparatus is an improved isolating hose assembly having first and second volumetrically compliant sections fluidly connected by an inductive flow member. Each of the first and second volumetrically compliant sections may, in addition, include a resistive ...
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Techniques for Reducing Fluid Borne Noise from Gear Pumps and Their Circuits
SAE Technical Paper Series, 1987<div class="htmlview paragraph">Much research has been carried out investigating the generation of noise from hydraulic circuits. This paper attempts to give an appreciation of the main factors influencing this noise generation in a way that is useful to circuit and component designers.</div> <div class="htmlview paragraph">The main ...
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Measurement of the Dynamic Properties of Hose Walls Required for Modelling Fluid-Borne Noise
Fluid Power Systems and Technology, 1997Abstract Methods are presented and examined for obtaining the dynamic material properties of a hose wall under realistic conditions. The properties have been used in mathematical models of fluid filled hoses with and without tuners inside in order to calculate pressure ripple in hydraulic circuits and to seek to minimise the associated ...
Derek K. Longmore +2 more
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Fluid borne noise in vane type hydraulic transmission systems
1984A computer model was developed for a radial vane pump, possessing a new configuration with twin abutments and retractable vanes. The model computes the flow and pressure histories of the segment and port, based on compressibility, leakage and geometry effects.
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Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2013
A common assumption about fluid power systems is that the outlet pressure ripple is a primary source for air-borne noise. Fluid pressure fluctuations are caused by flow ripples generated by positive displacement units that are the prime power movers in these systems.
Timothy Opperwall, Andrea Vacca
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A common assumption about fluid power systems is that the outlet pressure ripple is a primary source for air-borne noise. Fluid pressure fluctuations are caused by flow ripples generated by positive displacement units that are the prime power movers in these systems.
Timothy Opperwall, Andrea Vacca
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Active fluid borne noise reduction for aviation hydraulic systems
2016The aviation environment holds challenging application constraints for efficient hydraulic system noise reduction devices. Besides strong limits on component weight and size, high safety and reliability standards demand simple solutions. Hence, b silencers like inline expansion chambers and Helmholtz-Resonators are state-of-the aboard commercial ...
Waitschat, Arne +3 more
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2020
Hydraulic systems have many applications in the construction, transportation, and manufacturing sectors. Recent design trends involve systems with higher working pressures and more compact systems, which are advantageous because of power density increase. However, these trends imply higher forces and larger vibration amplitudes while having lesser mass
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Hydraulic systems have many applications in the construction, transportation, and manufacturing sectors. Recent design trends involve systems with higher working pressures and more compact systems, which are advantageous because of power density increase. However, these trends imply higher forces and larger vibration amplitudes while having lesser mass
openaire +1 more source