F - Mech Eng,Light,Heat,Weapons – 16 – F
Patent
F - Mech Eng,Light,Heat,Weapons
16
F
267/55
F16F 7/10 (2006.01) E01D 19/00 (2006.01) F16F 7/104 (2006.01)
Patent
CA 1308750
Abstract The present invention concerns apparatus for restraining vibration of a structure having at least one natural mode of vibration. The apparatus comprises an enclosure, a main weight, a resilient member, a viscous liquid, and an adjustment device. The enclosure defines an inner space therein and the main weight, has a mass and is enclosed in the enclosure. The resilient member connects the weight to the enclosure and exerts on the weight, a restoring force proportional to the relative displacement of the weight with respect to the enclosure. The viscous liquid is retained in the inner space and has a viscosity which provides to the weight, a damping force which is proportional to a relative velocity of the weight with respect to the enclosure. The resilience of the resilient member and the mass of the main weight provide the apparatus with at least one natural frequency of vibration The adjustment device provides the capability of adjusting resilience of the resilient member and/or the mass of the weight, in order to adjust the natural frequency of the apparatus. In order to restrain the vibration of the structure, the apparatus has at least one natural frequency of vibration which corresponds to at least one natural mode of vibration in the structure.
565410
Sato Takanori
Kirby Eades Gale Baker
Sato Takanori
Shimizu Construction Co. Ltd.
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