Apparatus and method to attenuate vibration and acoustic noise
AssigneeGeneral Electric Company
InventorWashington de Lima
Life of this patent
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Abstract
An apparatus and method to attenuate vibration and acoustic noise are provided. One apparatus includes a first layer formed from a non-metal material having a predetermined level of resistance to deformation to define a frequency response based on a vibrating frequency. The non-metal material has a profile defined by at least one sinusoid. The apparatus also includes a second layer defining an absorption layer coupled to the first layer. The second layer adds a body of mass adjacent the first layer.
Claims22
A vibration and sound attenuator comprising:
- a plurality of first layers formed from a non-metal material having a predetermined level of resistance to deformation to define a frequency response based on a vibrating frequency, the non-metal material having a profile defined by at least one sinusoid, wherein the plurality of first layers are configured in a stacked arrangement, and at least two of the plurality of first layers are tuned differently to define different frequency responses;
- and
- a second layer defining an absorption layer coupled to at least one of the first layers, the second layer adding a body of mass adjacent the first layer.
A vibration and sound attenuator comprising:
- a plurality of stiffness layers formed from a non-metal material having a surface following a sinusoidal path, wherein the plurality of stiffness layers are configured in a stacked arrangement and at least two of the plurality of stiffness layers are tuned differently to define different frequency responses;
- an absorption layer coupled to at least one of the plurality of stiffness layers, the absorption layer adding a body of mass adjacent the stiffness layer for absorbing vibrations;
- and
- a damping layer coupled to at least one of the stiffness layer or the absorption layer to further absorb the vibrations.
A method for attenuating vibration and sound, the method comprising:
- providing a plurality of stiffness layers formed from a non-metal material having a surface following a sinusoidal path, wherein the plurality of stiffness layers are configured in a stacked arrangement and at least two of the plurality of stiffness layers are tuned differently to define different frequency responses;
- providing an absorption layer and coupling the absorption layer to at least one of the plurality of stiffness layers, the absorption layer adding a body of mass adjacent the stiffness layer for absorbing vibrations;
- and
- providing a damping layer and coupling the damping layer to at least one of the plurality of stiffness layers or the absorption layer to further absorb the vibrations.
Dependencies are inferred from the claim text.