Acceleration Control of Structures Based on An Optimized Tuned Mass Damper Utilizing A Computing Algebra System
Min-Ho Chey1, Hyung-Jin Mun2
1Min-Ho Chey, Faculty of Architecture, Department of Civil Engineering, Keimyung University, Daegu-City, Korea, East Asian.
2Hyung-Jin Mun, Department of Information & Communication Engineering, Sungkyul University, Anyang-City, Korea, East Asian.
Manuscript received on 20 June 2019 | Revised Manuscript received on 27 June 2019 | Manuscript Published on 22 June 2019 | PP: 292-295 | Volume-8 Issue-8S2 June 2019 | Retrieval Number: H10530688S219/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Nowadays, the serviceability of building structures under earthquake excitations is an interesting issue and building acceleration responses are considered as a main factor producing the residents’ uncomfortable conditions and the unstable fluctuating response of non-structural elements in the buildings. Methods/Statistical analysis: In this study, the design requirements of an optimized and passively operating tuned mass damper (TMD) system used for absorbing earthquake force to suppress vibrational acceleration of structure is explored and its control effectiveness is also introduced. To control the dynamic characteristics of a structure, the parameters for an optimized TMD system are derived using a computing algebra system, ®Mathematica. From the optimally derived design parameters, the seismic responses of total acceleration of the superstructure (target system) and the TMD are presented numerically. Findings: Through the dynamic responses of the existing structure and the TMD under random excitations, the mass ratios’ effectiveness on the control of the main system by TMD adopted are approved and the effects of the main system’s damping on optimized TMD parameters is also verified. The controlling ability of the TMD is depends on the design optimization based on the natural frequency and damping ratios of the TMD designed. Especially, the larger TMD mass ratio makes more reliable acceleration control of the main target structure. Improvements/Applications: It is approved that the optimized design parameters for reducing the acceleration of the structures against earthquake excitations can be clearly derived through the optimization process. Thus, these parameters can be finally utilized in the practical seismic design of the TMD.
Keywords: TMD, Seismic, Optimization, Acceleration, Control.
Scope of the Article: Computational Techniques in Civil Engineering