Vibration damping laminate with vibration isolating cut therein
AssigneeMaterial Sciences Corporation
InventorAhid Nashif
Life of this patent
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Abstract
There is provided a vibration damping structure having an inner metal skin and an outer metal skin and a damping layer secured between the metal skins, with each of said metal skins having a cut therein. The damping layer is a viscoelastic material which is capable of adhering to the metal skins. The cuts are circular, encompassing and isolating an area wherein the vibration damping structure is connected to another body. The cuts extend through the inner metal skin and the outer metal skin to the damping layer.
Claims24
A vibration damping structure comprising two metal skins and a damping layer secured between said metal skins, each of said metal skins having only a single linear cut therein which extends to but not through the damping layer.
A vibration damping structure comprising two metal skins and a damping layer secured between the metal skins, each of the metal skins having only a single cut therein, the vibration damping structure having an aperture extending therethrough, each of the cuts being circular and coaxial with the aperture, the cut in one metal skin being of a different diameter than the cut in the other metal skin.
A vibration damping structure comprising an outer metal skin, an inner metal skin and a damping layer secured between said metal skins, said structure having an aperture therethrough, at least one of said inner and outer metal skins having a linear cut therein which completely encompasses said aperture and extends only to said damping layer.
A method of forming a vibration damping structure comprising:
- providing a laminate having an outer metal skin, an inner metal skin and a damping layer secured between the metal skins, forming an aperture through the laminate, and forming in at least one of the inner and outer metal skins of the laminate only a single narrow linear cut which extends to but not through the damping layer and completely encompasses the aperture.
A disk drive assembly comprising:
- a cover including two metal skins and a damping layer secured between the metal skins, each of the metal skins having only a single linear cut therein which extends to but not through the damping layer, and
- a spindle connected to the cover and having a rotatable member.
A method of damping vibrations in a damped laminate structure connected at a coupling region to a vibration source and having two metal skins and a damping layer secured between the metal skins, the method comprising:
- defining an area of at least one of the skins surrounding the coupling region, and
- separating the area from surrounding portions of the at least one skin so that vibrations transmitted to the area are physically isolated from the surrounding portions of the at least one skin.
Dependencies are inferred from the claim text.