Lightweight structural damping assembly
AssigneeSikorsky Aircraft Corporation
InventorStuart Drost
Life of this patent
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Abstract
A structural damping assembly includes a bonding plate, a stiffener layer, an elastomeric layer, and a constraining layer. The elastomeric layer is boned between the stiffener layer and the constraining layer. The bonding plate and the stiffener layer extend between, and are preferably in contact with, webs which form a pocket on a substrate such as a transmission support beam. The structural damping assembly uses the energy dissipating properties of the elastomeric layer that is sandwiched between the vibrating stiffener layer and the constraining layer to combat noise due to resonant response while operating as a stiffener that increases the frequency of resonance to a range where coincidental placement with an excitation frequency is reduced.
Claims18
A structural damping assembly comprising:
- a bonding plate;
- a stiffener layer attached to said bonding plate;
- an elastomeric layer attached to said stiffener layer;
- and
- a constraining layer attached to said stiffener layer.
A support structure assembly comprising:
- a support structure including a first web and a second web extending from a substrate;
- a bonding plate attached to said substrate between said first web and said second web;
- a stiffener layer attached to said bonding plate between said first web and said second web;
- an elastomeric layer attached to said stiffener layer;
- and
- a constraining layer attached to said stiffener layer.
A method of structurally damping a structure comprising the steps of:
- (1) locating a structural damping assembly having a bonding plate to a substrate between a first web and a second web to increase the frequency of resonance between the first web and the second web;
- and
- (2) dissipating a vibration through an elastomeric layer between a open-sided stiffener layer attached to the bonding plate at an open side and a constraining layer attached to the elastomeric layer.
Dependencies are inferred from the claim text.