Title:
ACTIVE/PASSIVE DISTRIBUTED
Document Type and Number:
WIPO Patent Application WO2006020416
Kind Code:
A3
Abstract:
The active/passive absorber for extended vibration and sound radiation control includes principally two layers (402) the first layer has a low stiffness per unit area which allows motion in the direction perpendicular to its main plane. The second layer is principally a mass layer (400'). These two combined layers have a frequency of resonance close to one of the main structure. The dynamic behavior of the coupled system makes the active/passive absorber a passive absorber; however, the first layer can be electrically actuated to induce motion in the direction perpendicular to its main plane. This additional property induces and/war changes the motion of the mass layer and therefore improves the dynamic properties of the active/passive absorber system. The absorber can be provided as multiple layers.
Inventors:
FULLER CHRISTOPHER R (US)
KONDYLAS KATHLEEN (US)
KONDYLAS KATHLEEN (US)
Application Number:
PCT/US2005/026817
Publication Date:
June 01, 2006
Filing Date:
July 29, 2005
Export Citation:
Assignee:
VIRGINIA TECH INTELL PROP (US)
International Classes:
H01L41/08
Foreign References:
| US5485053A | 1996-01-16 | |||
| US5719945A | 1998-02-17 |
Other References:
See also references of EP 1774510A4
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