In this paper, the engineer is introduced to the problem of noise, its measurement, and its control in hydraulic systems. The causes of noise are outlined, and an examination is made of the design of circuits, including consideration of the suction and delivery lines, valves and components, pumps and motors and the development of acoustic filters. The development of a pump designed for quiet running is described.
Get full access to this article
View all access options for this article.
References
1.
RichardsE. J.‘Noise considerations in the design of machines and factories’, Proc. Instn mech. Engrs1965–66180.
2.
RobinsonD. W.DodsonR. S.Br. J. appl. Phys.19567, 166.
3.
StevensS. S.J. acoust. Soc. Am.195628, 807.
4.
FitzpatrickH. M.StasbergM.‘Hydrodynamic sources of sound’, David Taylor Model Basin Rept1269, 1959 (Department of U.S. Navy).
5.
HaywardA. T. J.‘The air solubility of hydraulic oils’, N.E.L. Rept 53, 1962 (National Engineering Laboratory, London).
FirthD.YoungL.‘Some model experiments on special control valves’, Proc. Instn mech. Engrs1954 (Jan.).
8.
ThomaJ.Hydrostatic power transmission1964 (Trade and Technical Press).
9.
BerryG.‘The influence of dimensional accuracy on the noise and vibration of ball bearings’, N.E.L. Rept 50, 1962 (National Engineering Laboratory, London).
10.
MacCallumJ.‘An approach to the design of non-regular passages of contracting area’ (unpublished memo, National Engineering Laboratory, London, 1965).
KakaleyE.‘Acoustic filters: A state of the art, summary’, M.E.L. Rept 153/64 1964 (Dec.) (U.S. Navy Marine Engineering Laboratory, Annapolis, Maryland).
13.
DonaldJ. E.‘Fluid-borne noise attenuation characteristics of R.A.L. soundamp absorption wall liner in an expansion chamber acoustic filter’, M.E.L. Rept 238/64 1965 (Jan.) (U.S. Navy Marine Engineering Laboratory, Annapolis, Maryland).
14.
RansickT. F.‘Fluid-borne noise attenuation characteristics of a multiple-pass in-line acoustic filter’, M.E.L. Rept 121/64 1964 (Nov.) (U.S. Navy Marine Engineering Laboratory, Annapolis, Maryland).
15.
MorseP. M.Vibration and sound1948 (McGraw-Hill Book Co. Ltd).
16.
KinslerL. E.FreyA. R.Fundamentals of acoustics1962 (Wiley and Sons, New York).
17.
Cascades of guide vanes for 90° elbows1964 (July) (Design note issued by Royal Aeronautical Society).
