A rotor blade of a wind turbine with a particle damping device having at least one cavity (3) with inner walls (4) delimiting an interior and with a medium arranged in the interior so as to be movable with respect to the inner walls (4). Additionally, a rotor blade is provided with a vibration-damping mechanism, and a method for manufacture of such a rotor blade.

Various teachings herein may be used to make a bearing bush for a rotating shaft, wherein a wall of the bearing bush has a wall thickness which amounts to less than 10% of the diameter of the bearing bush. In the axial direction, the bearing bush is made from a plurality of layers connected with a material bond. Each layer has a layer thickness between 10 μm and 200 μm and the wall has closed cavities which are filled with a powder.

Multi-genre body armor comprising an external coil shock suspension (500) having a plurality of coil springs (510) attached to a top shell (500b) of rigid material and a bottom shell (500a) of rigid material; an internal coil shock suspension (511) having a plurality of coil springs (510) attached to a top shell (511c) of rigid material and a bottom shell (511b) of rigid material; and an innermost layer of encased (516a) buckwheat hull shock absorbers (516), with or without a sizing air pocket (526) sandwiched between the internal coil shock suspension (511) and the encased (516a) buckwheat hull shock absorbers (516).

A turbomachine rotor has a disk carrying vanes, each vane having a blade linked by a platform to a root. For at least one vane, a recess is defined between the platform and the disk, and a vibration damper is mounted in the recess. The vibration damper includes a first structural portion configured to contact the platform of which the vibrations are to be dampened, and a second mass portion configured to dampen these vibrations. The second mass portion is a powder and the first structural portion is a box containing the powder.

An assembly includes a vehicle component. The assembly includes a body embedded in the vehicle component, the body defining a chamber and having an outer surface defining an intrusion extending toward the chamber and engaged with the vehicle component. The assembly includes a plurality of dampening particles within the chamber.

An assembly includes a vehicle component. The assembly includes a body embedded in the vehicle component, the body defining a chamber and having an outer surface defining an intrusion extending toward the chamber and engaged with the vehicle component. The assembly includes a plurality of dampening particles within the chamber.

A gas turbine engine includes a fan rotating with a fan shaft, a compressor and a turbine section. The turbine section includes a fan drive rotor driving the fan through the fan shaft. At least one bearing is between an inner static case and the fan shaft. The inner static case is cantilever mounted to static structure, and has a forward end spaced in a forward direction toward the fan rotor from a cantilever mount. A damping assembly is associated with the inner static case.

A gas turbine engine includes a fan rotating with a fan shaft, a compressor and a turbine section. The turbine section includes a fan drive rotor driving the fan through the fan shaft. At least one bearing is between an inner static case and the fan shaft. The inner static case is cantilever mounted to static structure, and has a forward end spaced in a forward direction toward the fan rotor from a cantilever mount. A damping assembly is associated with the inner static case.

A counterweight assembly for counteracting vibrations or other forces in an appliance or machine includes a body and a funnel coupled to the body. The body includes an outer surface and an inner surface that defines an internal cavity that is adapted to receive a heavy aggregate material to form a counterweight. The funnel extends outwardly from the body and is adapted to deliver the heavy aggregate material to the internal cavity of the body.

The present invention provides a method and apparatus for energy absorption and vibrational dampening in a horizontal plane. According to a first preferred embodiment, the present invention discloses an apparatus for damping vibration of a pole which includes a housing with a horizontal floor having an inward curved surface for achieving vibration attenuation at a middle portion thereof to form an enclosed chamber. According to a further aspect of the first embodiment, at least one damping weight is preferably disposed in the inward curved surface and is preferably substantially spherical in shape. According to a further preferred embodiment, at least one dampening weight of the present may preferably include a hollow, inner cavity. According to further aspects of the present invention, the dampening weight preferably may further include a granular material located within the inner cavity.