METHOD AND APPARATUS FOR REDUCING STRUCTURAL VIBRATION AND NOISE
First Claim
1. A conjugate damper for a structural panel, said conjugate damper comprising:
- a constraining sheet extending between a first edge and a second edge, wherein each of said first edge and said second edge is at least partially coupled to a first surface of the structural panel; and
a damping layer coupled between said constraining sheet and the first surface such that when the structural panel is in a compressively deformed state, a thickness of said damping layer in a direction generally normal to the first surface is decreased relative to a baseline state, said damping layer comprises a viscoelastic material.
1 Assignment
0 Petitions
Accused Products
Abstract
A conjugate damper for a structural panel includes a constraining sheet extending between a first edge and a second edge. Each of the first edge and the second edge is at least partially coupled to a first surface of the structural panel. The conjugate damper also includes a damping layer coupled between the constraining sheet and the first surface such that, when the structural panel is in a compressively deformed state, a thickness of the damping layer in a direction generally normal to the first surface is decreased relative to a baseline state. The damping layer includes a viscoelastic material.
83 Citations
20 Claims
-
1. A conjugate damper for a structural panel, said conjugate damper comprising:
-
a constraining sheet extending between a first edge and a second edge, wherein each of said first edge and said second edge is at least partially coupled to a first surface of the structural panel; and a damping layer coupled between said constraining sheet and the first surface such that when the structural panel is in a compressively deformed state, a thickness of said damping layer in a direction generally normal to the first surface is decreased relative to a baseline state, said damping layer comprises a viscoelastic material. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A structural panel for an aircraft, said structural panel comprising:
-
a first surface; and at least one conjugate damper coupled to said first surface, said at least one conjugate damper comprising; a constraining sheet extending between a first edge and a second edge, wherein each of said first edge and said second edge is at least partially coupled to said first surface; and a damping layer coupled between said constraining sheet and said first surface such that when said structural panel is in a compressively deformed state, a thickness of said damping layer in a direction generally normal to said first surface is decreased relative to a baseline state, said damping layer comprises a viscoelastic material. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A method of reducing structural vibration and noise transmission in a structural panel, said method comprising:
-
coupling a first edge of a constraining sheet at least partially to a first surface of the structural panel; coupling a second edge of the constraining sheet at least partially to the first surface; providing a damping layer with a viscoelastic material; and coupling the damping layer between the constraining sheet and the first surface such that when the structural panel is in a compressively deformed state, a thickness of the damping layer in a direction generally normal to the first surface is decreased relative to a baseline state. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification