JOHN KIM VANDIVER
Pilots at Peacock Farm Rd, Lexington, MA
License number
Massachusetts A1959059
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
3 Peacock Farm Rd, Lexington, MA 02421
Professional information
Method And Apparatus For Absorbing Dynamic Forces On Structures
US Patent:
4226554, Oct 7, 1980
Filed:
May 23, 1978
Appl. No.:
5/908873
Inventors:
John K. Vandiver - Lexington MA
Shuhei Mitome - Kamakura, JP
Shuhei Mitome - Kamakura, JP
Assignee:
Massachusetts Institute of Technology - Cambridge MA
International Classification:
E02B 100
US Classification:
405195
Abstract:
An apparatus and method is provided for suppressing the dynamic response of structures such as offshore structures to forces, such as that of wind, wave or seismic excitation. A storage tank for liquid with a free surface is positioned on the structure and is designed to have a natural frequency equal to or nearly equal to the natural frequency of the structure. The storage tank containing the liquid reduces the dynamic response of the structure thereby reducing structural degradation such as metal fatique in the structure and increasing the useful life of the structure. The effect of the tank on the motion of the structure is that of a common dynamic absorber.