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US 2003/0188941 A1Published application
Tuned mass damper with translational axis damping
OwnerToren S. Davis, David R. Koehler +1inventors
InventorsToren S. Davis, David R. Koehler, James H. Boyd
Life of this patent
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Abstract
A tuned mass damper includes a container having first and second inside wall portions, and a proof mass disposed within the container. Multiple pairs of oppositely directed bellows containing damping fluid are connected between the wall portions and the mass to permit motion of the mass along primary axes. A spring is connected in series with each pair of bellows. The spring has a diameter substantially less than a diameter of the corresponding pair of bellows so that the spring and bellows allow translational movement of the mass about an axis other than the primary axes.
Claims18
A tuned mass damper comprising:
- a container having inner walls;
- a mass disposed within the container;
- a first pair of oppositely directed fluid containment assemblies each comprising a cup-shaped member and an expandable bellows connected to the mass to define a fluid chamber containing a damping fluid, the first pair of oppositely directed fluid containment assemblies permitting motion of the mass along a first axis;
- a second pair of oppositely directed fluid containment assemblies each comprising a cup-shaped member and an expandable bellows connected to the mass to define a fluid chamber containing a damping fluid, the second pair of oppositely directed fluid containment assemblies permitting motion of the mass along a second axis;
- first and second springs connected in series with the first pair of fluid containment assemblies for biasing the first pair of containment assemblies between opposite inner walls of the container, the first and second springs each having an outside diameter less than an inside diameter of the cup-shaped members to allow translational deflection of the mass about an axis other than the first axis;
- and
- third and fourth springs connected in series with the second pair of fluid containment assemblies for biasing the second pair of containment assemblies between opposite inner walls of the container, the third and fourth springs each having an outside diameter less than an inside diameter of the cup-shaped members to allow translational deflection of the mass about an axis other than the second axis.
4 more elements
A tuned mass damper comprising:
- a container having first, second, third, and fourth inner walls;
- a mass disposed within the container;
- a first pair of oppositely directed fluid containment assemblies each comprising a cup-shaped member and an expandable bellows connected to the mass to define a fluid chamber containing a damping fluid, the first pair of oppositely directed fluid containment assemblies permitting motion of the mass along a first axis;
- a second pair of oppositely directed fluid containment assemblies each comprising a cup-shaped member and an expandable bellows connected to the mass to define a fluid chamber containing a damping fluid, the second pair of oppositely directed fluid containment assemblies permitting motion of the mass along a second axis;
- first and second springs connected in series with the first pair of fluid containment assemblies for biasing the first pair of containment assemblies between the first and second inner walls of the container, the first and second springs each having an outside diameter substantially less than an inside diameter of the cup-shaped members to allow translational deflection of the mass about an axis other than the first axis;
- and
- third and fourth springs connected in series with the second pair of fluid containment assemblies for biasing the second pair of containment assemblies between the third and fourth inner walls of the container, the third and fourth springs each having an outside diameter substantially less than an inside diameter of the cup-shaped members to allow translational deflection of the mass about an axis other than the second axis.
4 more elements
A tuned mass damper comprising:
- a container having first and second inner walls;
- a mass disposed within the container;
- a first fluid containment assembly comprising a first bellows and a first cup-shaped member connected to the mass to define a first fluid chamber containing a damping fluid;
- a second fluid containment assembly comprising a second bellows and a second cup-shaped member connected to the mass to define a second fluid chamber containing a damping fluid, the first and second fluid containment assemblies permitting motion of the mass along a first axis;
- and
- a first spring connected in series between the first inner wall of the container and the first cup-shaped member, said first spring having an outer diameter less than an inner diameter of the first cup-shaped member so that the first spring and first bellows allow translational deflection of the mass about an axis other than the first axis.
3 more elements
Dependencies are inferred from the claim text.