Current Trends in the Optimization Approaches for Optimal Structural Control
This chapter describes some of the recent studies on the optimal control of structures. Initially, different passive, active and semi-active control devices are introduced and the importance of optimization in each case is discussed. A comprehensive liter
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Abstract This chapter describes some of the recent studies on the optimal control of structures. Initially, different passive, active and semi-active control devices are introduced and the importance of optimization in each case is discussed. A comprehensive literature review on the optimal design of various well-known control devices of each category i.e., Tuned Mass Damper (Active, Passive and Semi-Active modifications), Fluid Viscous Damper (Passive and Semi-Active), Viscoelastic Damper and Base Isolation (Passive and Semi-Active) and Active Tendon with special attention to the first studies and studies performed in the last decades, is presented. To suppress tall building vibrations subjected to wind and seismic loads, Tuned Mass Dampers (TMDs) modification have recently gained attention due to their simplicity, stability and reliability. Therefore, in the last section, the results of some recent studies on the optimization of Active and passive Tuned Mass Dampers and a recently proposed promising modification of TMD (i.e. Tuned Mass Damper Inerter) are comprehensively discussed. Keywords Structural control · Optimization · Tuned mass damper
1 Introduction The structural engineering community has always been interested in mitigating structural vibrations caused by dynamic lateral loads (such as earthquake, wind, wave, etc.) to provide a safe and uninterrupted performance of the structure. Therefore, researchers have attempted to address this challenge using different methods, among M. F. Farzam · S. A. M. Gavgani University of Maragheh, Maragheh, Iran H. H. Jalali University of Texas at Arlington, Arlington, TX, USA A. E. Kayabekir · G. Bekda¸s (B) Istanbul University-Cerrahpa¸sa, Istanbul, Turkey e-mail: [email protected] © Springer Nature Switzerland AG 2021 S. M. Nigdeli et al. (eds.), Advances in Structural Engineering—Optimization, Studies in Systems, Decision and Control 326, https://doi.org/10.1007/978-3-030-61848-3_5
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which structural control is one of the most popular and well-known approaches. In structural control, the dynamic structural parameters (e.g. the stiffness and damping) is altered by adding external devices and equipment to efficiently reduce the effects of the dynamic applied loads on the structural elements. As a result, the natural frequency, mode shapes and corresponding damping values of the structure will change such that the forces caused by the dynamic loads are reduced. In other words, structural control refers to the use of appropriate tools in a structure with the goal of improving its behavior. In general, structural control is subdivided into three different categories: passive, active and semi-active control; these devices have been widely used on a variety of structures, including buildings, bridges, power plants, offshore platforms, hospitals, schools, factories, etc. It is important to note that in order to balance the associated expenses that is imposed on the projects due to the added control devices, they should be designed and locat
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