Distributed mass damper system for integrating structural and environmental controls in buildings / Tat S. Fu in Journal of engineering mechanics, Vol. 137 N° 3 (Mars 2011)  

Public ISBD [article]  inJournal of engineering mechanics > Vol. 137 N° 3 (Mars 2011) . - pp.205-213 Titre : Distributed mass damper system for integrating structural and environmental controls in buildings Type de document : texte imprimé Auteurs : Tat S. Fu, Auteur ; Johnson, Erik A., Auteur Année de publication : 2011 Article en page(s) : pp.205-213 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Dynamic models Vibration control Mass damper Earthquakes Optimization. Résumé : 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. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.org/emo/resource/1/jenmdt/v137/i3/p205_s1?isAuthorized=no [article] Distributed mass damper system for integrating structural and environmental controls in buildings [texte imprimé] / Tat S. Fu, Auteur ; Johnson, Erik A., Auteur . - 2011 . - pp.205-213. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 137 N° 3 (Mars 2011) . - pp.205-213 Mots-clés : Dynamic models Vibration control Mass damper Earthquakes Optimization. Résumé : 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. DEWEY : 620.1 ISSN : 0733-9399 En ligne : http://ascelibrary.org/emo/resource/1/jenmdt/v137/i3/p205_s1?isAuthorized=no

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