On the dynamics of a very slender building under winds: response reduction using MR dampers with lever mechanism
This paper presents wind‐induced response reduction in a very slender building using magneto‐rheological (MR) dampers with lever mechanism. The building presents a case study of an engineered design that is instructive. The paper shows that shear response and flexural response of tall buildings pres...
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| Published in: | The structural design of tall and special buildings Vol. 20; no. 5; pp. 539 - 551 |
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| Format: | Journal Article |
| Language: | English |
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Chichester, UK
John Wiley & Sons, Ltd
01-08-2011
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| Abstract | This paper presents wind‐induced response reduction in a very slender building using magneto‐rheological (MR) dampers with lever mechanism. The building presents a case study of an engineered design that is instructive. The paper shows that shear response and flexural response of tall buildings present two very different cases for vibration suppression. MR dampers are implemented optimally in the building to reduce its response in the lateral directions for both structural safety and occupant comfort concerns. A proposed lever mechanism is used with the dampers to improve their performance. The study shows how a lever mechanism can enable application to flexural response and scenarios where the inter‐story drift is not enough for dampers to work effectively. Furthermore, the decentralized bang‐bang controller produced additional improvement to the performance of the MR dampers. Copyright © 2010 John Wiley & Sons, Ltd. |
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| AbstractList | This paper presents wind‐induced response reduction in a very slender building using magneto‐rheological (MR) dampers with lever mechanism. The building presents a case study of an engineered design that is instructive. The paper shows that shear response and flexural response of tall buildings present two very different cases for vibration suppression. MR dampers are implemented optimally in the building to reduce its response in the lateral directions for both structural safety and occupant comfort concerns. A proposed lever mechanism is used with the dampers to improve their performance. The study shows how a lever mechanism can enable application to flexural response and scenarios where the inter‐story drift is not enough for dampers to work effectively. Furthermore, the decentralized bang‐bang controller produced additional improvement to the performance of the MR dampers. Copyright © 2010 John Wiley & Sons, Ltd. Abstract This paper presents wind‐induced response reduction in a very slender building using magneto‐rheological (MR) dampers with lever mechanism. The building presents a case study of an engineered design that is instructive. The paper shows that shear response and flexural response of tall buildings present two very different cases for vibration suppression. MR dampers are implemented optimally in the building to reduce its response in the lateral directions for both structural safety and occupant comfort concerns. A proposed lever mechanism is used with the dampers to improve their performance. The study shows how a lever mechanism can enable application to flexural response and scenarios where the inter‐story drift is not enough for dampers to work effectively. Furthermore, the decentralized bang‐bang controller produced additional improvement to the performance of the MR dampers. Copyright © 2010 John Wiley & Sons, Ltd. This paper presents wind-induced response reduction in a very slender building using magneto-rheological (MR) dampers with lever mechanism. The building presents a case study of an engineered design that is instructive. The paper shows that shear response and flexural response of tall buildings present two very different cases for vibration suppression. MR dampers are implemented optimally in the building to reduce its response in the lateral directions for both structural safety and occupant comfort concerns. A proposed lever mechanism is used with the dampers to improve their performance. The study shows how a lever mechanism can enable application to flexural response and scenarios where the inter-story drift is not enough for dampers to work effectively. Furthermore, the decentralized bang-bang controller produced additional improvement to the performance of the MR dampers. |
| Author | Resta, Ferruccio Zasso, Alberto Aly, Aly Mousaad |
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| Cites_doi | 10.1061/41016(314)285 10.1016/S0167-6105(02)00431-2 10.1016/S0167-6105(02)00299-4 10.1088/0964-1726/17/4/045008 10.1016/S0167-6105(98)00050-6 10.1088/0964-1726/5/5/006 10.1002/tal.413 |
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| References | Lu L, Chiang W, Tang J, Liu M, Chen C. 2003. Active control for a benchmark building under wind excitations. Journal of Wind Engineering and Industrial Aerodynamics 91(4): 469-493. DOI: 10.1016/S0167-6105(02)00431-2. Dyke SJ, Spencer BF, Sain MK, Carlson JD. 1996. Modeling and control of magnetorheological dampers for seismic response reduction. Smart Materials and Structures 5(5): 565-575. DOI: 10.1088/0964-1726/5/5/006. Wu JC, Pan BC. 2002. Wind tunnel verification of actively controlled high-rise building in along-wind motion. Journal of Wind Engineering and Industrial Aerodynamics 90(12-15): 1933-1950. DOI: 10.1016/S0167-6105(02)00299-4. Khaje-Karamodin A, Haji-Kazemi H, Rowhanimanesh AR, Akbarzadeh-Tootoonchi M. 2009. Semi-active control of structures using a neuro-inverse model of MR dampers. Scientia Iranica 16(3): 256-263. Attaway S. 2009. Matlab: A Practical Introduction to Programming and Problem Solving. Butterworth-Heinemann: Amsterdam. Smith RJ, Willford MR. 2007. The damped outrigger concept for tall buildings. Structural Design of Tall and Special Buildings 16(4): 501-517. DOI: 10.1002/tal.413. Aly AM, Christenson RE. 2008. On the evaluation of the efficacy of a smart damper: a new equivalent energy-based probabilistic approach. Smart Materials and Structures 17(4). DOI: 10.1088/0964-1726/17/4/045008. Soong TT. 1990. Active Structural Control: Theory and Practice. John Wiley & Sons Inc. Diana G, De Ponte S, Falco M, Zasso A. 1998. A new large wind tunnel for civil-environmental and aeronautical applications. Journal of Wind Engineering and Industrial Aerodynamics: 74-76 553-565. DOI: 10.1016/S0167-6105(98)00050-6. 2003; 91 1990 1998; 74–76 2008; 17 2009 2008 1997 2004 2002; 90 1996; 5 2009; 16 2007; 16 1999 Soong TT. (e_1_2_8_13_1) 1990 e_1_2_8_14_1 e_1_2_8_15_1 e_1_2_8_3_1 e_1_2_8_2_1 Attaway S. (e_1_2_8_5_1) 2009 e_1_2_8_4_1 e_1_2_8_7_1 e_1_2_8_6_1 e_1_2_8_9_1 e_1_2_8_8_1 e_1_2_8_11_1 e_1_2_8_12_1 Khaje‐Karamodin A (e_1_2_8_10_1) 2009; 16 |
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| Snippet | This paper presents wind‐induced response reduction in a very slender building using magneto‐rheological (MR) dampers with lever mechanism. The building... Abstract This paper presents wind‐induced response reduction in a very slender building using magneto‐rheological (MR) dampers with lever mechanism. The... This paper presents wind-induced response reduction in a very slender building using magneto-rheological (MR) dampers with lever mechanism. The building... |
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| SubjectTerms | Dampers Instructive Levers Optimization Performance enhancement Reduction Tall buildings Vibration |
| Title | On the dynamics of a very slender building under winds: response reduction using MR dampers with lever mechanism |
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