Brakes – Inertia of damping mass dissipates motion
Patent
1989-09-15
1992-10-27
Butler, Douglas C.
Brakes
Inertia of damping mass dissipates motion
188381, 267148, F16F 710
Patent
active
051581620
ABSTRACT:
Vibration dampener and stiffener apparatus and method for increasing the dampening and the stiffness of a tube subjected to large amplitude flow-induced vibration. The preferred embodiment of the apparatus includes a plurality of flexible braided cables capable of being disposed in the tube for dissipating the vibration energy of the tube as the tube vibrates, the cables having a first end portion and a second end portion. Enclosing the first end portion of the plurality of flexible cables is a rigid cable tip member and enclosing the second end portion of each cable is a rigid cable end fitting. As the tube vibrates due to flow-induced vibration, the vibration energy will be transferred to the cables which will rub together creating frictional heat energy that will radiate from the cables. In this manner, the vibration amplitude of the tube is decreased. Moreover, as the tube vibrates, the rigid cable tip member and the rigid cable end fittings will tend to stiffen the tube.
REFERENCES:
patent: 2238146 (1940-02-01), Yavitch
patent: 2889011 (1959-06-01), Weaver
patent: 2960189 (1960-11-01), Osburn
patent: 2969126 (1961-01-01), Gardner
patent: 2969416 (1961-01-01), McGavern
patent: 3019622 (1962-02-01), Fermier
patent: 3128330 (1964-04-01), Grasser
patent: 3204913 (1965-09-01), Lawrence et al.
patent: 3351307 (1967-11-01), Michel et al.
patent: 3371895 (1968-03-01), Speranza, Jr.
patent: 3539139 (1970-11-01), Eucker
patent: 3553345 (1971-01-01), Edwards
patent: 3559512 (1971-02-01), Aggerwal
patent: 3568805 (1971-03-01), Reed, III
patent: 3690414 (1972-09-01), Aggerwal et al.
patent: 3820594 (1974-06-01), Ritland et al.
patent: 3991856 (1976-11-01), Shigeta et al.
patent: 4050665 (1977-09-01), Matthews et al.
patent: 4211308 (1980-07-01), Reuterskoild
patent: 4350233 (1982-09-01), Buckley
patent: 4390042 (1983-06-01), Kucherer et al.
patent: 4519519 (1985-05-01), Meuschke et al.
patent: 4590991 (1986-05-01), Cooper, Jr. et al.
patent: 4591136 (1986-05-01), Leonard
patent: 4653576 (1987-03-01), Lagally
patent: 4678620 (1987-07-01), Marshall et al.
patent: 4706788 (1987-11-01), Inman et al.
patent: 4718479 (1988-01-01), Lagally et al.
patent: 4720840 (1988-01-01), Lagally et al.
patent: 4823846 (1989-04-01), Everett et al.
patent: 5000430 (1991-03-01), Smith
Au-Yang, M. K., "Development of Stabilizers for Steam Generator Tube Repair", Nuclear Engineering and Design, 103, pp. 189-197 (1987).
Schofield, R. S., "Steam Generator Tube Staking At The San Onofre Nuclear Generator Station", Radiation Protection Management, pp. 68-72 (Jan., 1986).
Au-Yang, M. K., "Flow-Induced Vibration: Guidelines for Design, Diagnosis, and Troubleshooting of Common Power Plan Components", Transactions of the ASME, vol. 107 (Nov., 1985).
Paidoussis, M. P., "A Review of Flow-Induced Vibrations In Reactors and Reactor Components", Nuclear Engineering and Design, 74, pp. 31-60 (1982).
Jendraejczyk, J. A., and Chen, S. S., "Fluid Forces Acting On Circular Cylinders In Liquid Cross Flow", Components Technology Division, Argonne National Laboratory, Argonne, Ill.
Fink David J.
Frick Thomas M.
Ira Stephen M.
Ziler James R.
Butler Douglas C.
Westinghouse Electric Corp.
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