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AVIIS, ACTIVE VIBRATION ISOLATION IN SHIPS: SOURCE IDENTIFICATION AND ANVC APPROACH
Ansvarig organisation
1997 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat) Published
Abstract [en]

Engine induced sound and vibration levels in boats for professional and leisure use is in many cases unacceptably high in term of comfort and the environment. Classical methods for passive treatment are normally less effective due to the low frequency content and often leads to an increase in weight. This contradicts the requirements for lower weight for increased speed. More efficient vibration damping methods must therefore be found. With active engine mounts, it is possible to achieve a decrease in the vibrations even when the hull is not very stiff. This is especially important in marine applications since the engines are mounted on weak and light structures. The AVIIS project aims at investigating the effects of a combined passive/active engine mount for use in boats. A Storebro 36 Royal Cruiser with two Volvo Penta engines has been used in the project. Four different approaches have been appraised, the results of which are presented here: 1. passive engine mounts, with and without thrust bearings, 2. optimized passive engine mounts, 3. passive engine mounts, rigidly mounted, 4. A combined active/passive engine mount. This paper reports the key data from the measurements and how the different primary sources have been estimated from the analysis. This analysis has then been used to select the ANVC approach.

Ort, förlag, år, upplaga, sidor
Adelaide, South Australia: Int. Inst. of Acoustics and Vibration (IIAV) , 1997.
Nyckelord [en]
active control
Nationell ämneskategori
Signalbehandling
Identifikatorer
URN: urn:nbn:se:bth-9519Lokalt ID: oai:bth.se:forskinfoD0E6E7040A5C7BB2C1256C8000542D1BOAI: oai:DiVA.org:bth-9519DiVA, id: diva2:837388
Konferens
Fifth International Congress on Sound and Vibration
Tillgänglig från: 2012-09-18 Skapad: 2002-11-29 Senast uppdaterad: 2015-06-30Bibliografiskt granskad

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Johansson, Sven

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