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27 March 2012 Control of structures featuring a new MRE isolator system
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This study is focused on control of a scaled building structure using a new semi-active Variable Stiffness and Damping Isolator (VSDI). The proposed VSDI system consists of a traditional steel-rubber vibration absorber, and a magnetorhelogical elastomer (MRE) with a controllable stiffness and damping behavior. To demonstrate the feasibility of using VSDIs a 1:16 scaled, three-story building is constructed and installed on a shake table and its base is supported by four prototype VSDIs. The VSDIs can be regulated in real time by varying the applied magnetic field through a controller. A phenomenological model is proposed and implemented on VSDI devices. The scaled El Centro earthquake excitation is applied to the system, and the vibration mode is controlled by a Lyapunov-based control strategy. Results show that the a significant reduction in structural response can be achieved for both displacement and acceleration.
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Majid Behrooz, Xiaojie Wang, and Faramarz Gordaninejad "Control of structures featuring a new MRE isolator system", Proc. SPIE 8341, Active and Passive Smart Structures and Integrated Systems 2012, 83411I (27 March 2012);

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