Vibration-damped structure

948,483. Laminates. BOLT BERANEK & NEWMAN Inc. Jan. 1, 1960 [March 23, 1959], No. 123/60. Heading B5N. A structure designed to damp a predetermined band of vibrational-wave frequencies comprises two acoustically dissimilar transmission elements separated by a viscous medium. The two elements are...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	KURTZE GUENTHER
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR BLASTING BUILDING CEILINGS ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS FLOORS GENERAL BUILDING CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INSULATION OR OTHER PROTECTION OF BUILDINGS LIGHTING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS ROOFS SHOCK-ABSORBERS SOUND-PRODUCING DEVICES SPRINGS THERMAL INSULATION IN GENERAL WALLS, e.g. PARTITIONS WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	948,483. Laminates. BOLT BERANEK & NEWMAN Inc. Jan. 1, 1960 [March 23, 1959], No. 123/60. Heading B5N. A structure designed to damp a predetermined band of vibrational-wave frequencies comprises two acoustically dissimilar transmission elements separated by a viscous medium. The two elements are in the form of plates, rods, tubes &c. and have different propagation velocities for waves transmitted in a bending mode. The velocity difference is obtained by using different dimensions, materials or operating temperatures for the two elements. As shown, two steel plates 1, 3 of different thicknesses are separated by a liquid medium 5 e.g. silicone oil. The two plates may have the same thickness and a difference in velocities msy be obtained by notching one of them. The plates may be spaced by foam plastic separators 7. The two plates may be made of translucent or transparent glass and the medium 5 may be light-transmitting.