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- Title
Distributed Mass Damper System for Integrating Structural and Environmental Controls in Buildings.
- Authors
Fu, Tat S.; Johnson, Erik A.
- Abstract
The writers recently proposed a new type of mass damper system to integrate structural and environmental control systems for buildings. External shading fins are used as mass dampers such that they can (1) control building energy consumption by adjusting the fins and, thus, the amount of sunlight entering the building; and (2) control structural movements by dissipating energy with the dampers during strong motions. Because shading fins are placed along the height of the building, the mass dampers are distributed along the building height instead of concentrated in one or a few locations like traditional tuned mass dampers (TMDs). The distributed mass damper (DMD) system is formulated and simulated for earthquake motions. Optimization is performed on damper parameters (i.e., masses, stiffness, and damping coefficients) of the passive DMD system to minimize structural responses. A near-optimal DMD system outperforms a single TMD system. The movable shading fins are also briefly discussed; they show a substantial savings in building energy consumption.
- Subjects
EARTHQUAKES; MATHEMATICAL optimization; DEGREES of freedom; NUMERICAL solutions to equations; LYAPUNOV functions; RANDOM noise theory; ENERGY sources for buildings; ENERGY consumption
- Publication
Journal of Engineering Mechanics, 2011, Vol 137, Issue 3, p205
- ISSN
0733-9399
- Publication type
Article
- DOI
10.1061/(ASCE)EM.1943-7889.0000211