Open Access Journal

ISSN : 2456-1290 (Online)

International Journal of Engineering Research in Computer Science and Engineering (IJERCSE)

Monthly Journal for Computer Science and Engineering

Open Access Journal

International Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE)

Monthly Journal for Mechanical and Civil Engineering

ISSN : 2456-1290 (Online)

Vibration control of Benchmark building with stacked TMDs

Author : Sanat Marathe 1 Suhasini Madhekar 2

Date of Publication :22nd March 2017

Abstract: Tuned mass dampers (TMDs) placed in sky scrapers show huge deflections and accelerations as they absorb a lot of the energy from the main structure. The responses of these TMDs need to be controlled with some additional dampers to keep their motion in check. The current paper deals with the numerical study of a similar system in which a TMD (secondary TMD) is used to control another TMD (primary TMD). Primary TMD is also analogous to an important equipment such as a server placed in a building which needs to be controlled. In the present study, the response of a 76-storey Benchmark building is investigated under across-wind loads. Dynamic Time History Analysis of the building is performed in MATLAB 2010a using the wind time history data by state space method. In addition to deflections, drift and acceleration responses have also been taken into consideration. Results show that for an optimum mass of primary TMD (0.33%), the overall response (i.e. peak, Root Mean Square (RMS) and average displacement, acceleration and drift) of the structure is reduced up to 56%. Moreover when secondary TMD is placed, for an optimum mass ratio (2%), the overall response reduction of the structure remains same (i.e. 56 %); whereas the overall response of the primary TMD reduces by 36%. With further increase in the mass of secondary TMD, a trend is observed where overall response of primary TMD goes on decreasing whereas that of the structure increases. Thus, a secondary TMD can be used effectively only up to a mass ratio of 2% of primary TMD. If mass ratio of secondary TMD is kept equal to or below 0.4%, more response reduction for primary structure can be achieved

Reference :

    1. G. Chen, Jingning Wu (2001), “Optimal placement of multiple tune mass dampers for seismic structures”, Journal of Structural Engineering, Vol. 127, No. 9.
    2. J. Almazan, J. De la Llera, J. Inaud, D. LopezGarcıa, L. Izquierdo (2007), “Bidirectional and homogeneous tuned mass damper: A new device for passive control of vibrations”, Engineering Structures29, pp. 1548–1560
    3.  V. Thakur, P. Pachpor, (2012) “Seismic Analysis of Multistoried Building with TMD (Tuned Mass Damper)”, International Journal of Engineering Research and Applications (IJERA), Vol. 2, Issue 1, pp. 319-326.
    4.  S. Elias, V. Matsagar (2013), “Wind response control of 76- storey benchmark building with distributed multiple tuned mass dampers”, The Eighth Asia- Pacific Conference on Wind Engineering
    5. J. Yang, A. Agrawal, B. Samali, and J. Wu (2004) “Benchmark Problem for Response Control of WindExcited Tall Buildings”, Journal of Engineering Mechanics, Vol. 130, No. 4.
    6. B. Samali, K. Kwok, G. Wood and J. Yang(2004), “Wind tunnel tests for wind-excited benchmark building”, Journal of Engineering Mechanics, Vol. 130, No. 4.
    7. R. Rana (1996), “Response control of structures by tuned mass dampers and their generalizations”, Eleventh World Conference on Earthquake Engineering, paper no. 498.

Recent Article