Friction device for protection of structural systems against dynamic actions
OwnerUwe Dorkainventor
Life of this patent
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Abstract
A friction damper that is able to reduce vibrational motions in two dimensions, can be re-used, is easily adjustable and has an extremely smooth transition between sticking and sliding in particular. The friction damper features a stack of at least two friction discs and a prestressing device for this stack. Touching each other at curved contact surfaces, these friction discs are alternately joined with the first and second of two friction damper connections, respectively. The curved contact surfaces can be provided in a simple manner either by an alternate arrangement of lense-shaped and plane friction rings or by alternate arrangement of plane friction rings with convex inserts and plane friction rings.
Claims11
A friction damper for the protection of structures against dynamic effects, comprising
- first and second damping connections which are relatively movable,
- a stack of at least one first friction disc and at least one second friction disc, said discs having respective first and second contact surfaces which are placed against each other, at least one of said first and second surfaces being curved, said at least one first disc being in contact with said first damping connection, said at least one second disc being in contact with said second damping connection, and
- prestressing means for loading said first and second discs against each other.
Dependencies are inferred from the claim text.