Static structures (e.g. – buildings) – Controlled by condition responsive means
Patent
1987-11-13
1989-06-27
Murtagh, John E.
Static structures (e.g., buildings)
Controlled by condition responsive means
52167, 244 75A, 248638, 2671401, F16M 1300, E04H 902
Patent
active
048416851
ABSTRACT:
Stress to a flexible structure in a dynamic environment is suppressed by controlling at least one variable parameter of an associated damper in accordance with sensed information as to movement of the structure. In a preferred embodiment, the damper is an impact damper having an auxiliary mass mounted for movement within a variable clearance permitting the timing of impacts to be controlled. In either case, impacts between the auxiliary mass and the flexible structure occur substantially when the flexible structure passes through a preselected neutral position, at which the velocity of the structure is a maximum.
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Dehghanyar et al., "Semi-Active Control of Nonlinear Flexible Structures", presented at XVIth International Congress of Theoretical and Applied Mechanics, 19-25 Aug. 1984, Lyngby, Denmark.
Dehghanyar, T., "Analytical and Experimental Studies of the Active Control of Flexible Structures", pp. 121-137, Doctoral Dissertation presented to the Faculty of the Graduate School of the University of Southern California, 1984.
Masri et al., "On the Stability of the Impact Damper", Journal of Applied Mechanics, Paper No. 66-APM-CC (1966).
Caughey Thomas K.
Dehghanyar Tejav J.
Masri Sami F.
Murtagh John E.
University of Southern California
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