Structure-born sound isolation by means of flexible elements is a well-established technique in vibration control. Today many different kinds of flexible elements or "isolators" are commercially available. Some examples are: Springs, hoses, bellows and flexible shaft couplings. In this paper the goal was to give some general acoustic guidelines for the design of resiliently mounted machinery, especially with regard to the mountings supporting these installations. Attention was focussed on two questions: what isthe acoustic effect on an insufficient impedance mismatch at the mounting-structure interfaces and what is the importance of the number and location of the mountings. It can be concluded that the impedance mismatch at both sides of the mounting is essential for a good isolation performance. Application of mountings with an insufficient mismatch on the other hand is in general neither beneficial nor harmful. Furthermore in most cases it is preferable to use a larger number of soft mountings rather than a small number of stiff mountings. Analogously, mountings should, if possible, not be grouped together but rather be distributed.
Vibration isolation with mountings: how many , how stiff
Empfehlungen fuer die Schwingungseindaemmung im Maschinenbereich durch Einbau von Isolationsvorrichtungen, insbesondere nach Anzahl und Staerke (Steifigkeit)
Naval Architect ; Mai ; E296-E298
1995
3 Seiten, 2 Bilder, 3 Quellen
Aufsatz (Zeitschrift)
Englisch
Engineering Index Backfile | 1938
Engineering Index Backfile | 1938
Engineering Index Backfile | 1947
ENGINE MOUNTINGS FOR VIBRATION CONTROL
SAE Technical Papers | 1959
|Noise and vibration insulation with mountings
Tema Archiv | 1995
|