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Semi-Active Control of Structures Equipped With MR Dampers Based on Uniform Deformation Theory

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Abstract

Optimization based on uniform deformation theory (UDT) was proposed as a new technique in the field of optimum design of structures. In this paper, the concept of UDT has been utilized for semi-active control of buildings equipped with magneto-rheological (MR) dampers. Based on UDT, a method for determining the optimum control voltage using a polynomial controller has been presented. The coefficients of the polynomial controller have been determined by minimizing the standard deviation of the maximum inter-story drifts of a structure and by utilizing the Particle Swarm Optimization (PSO) algorithm. The proposed controller based on UDT has been applied to control three- and six-story nonlinear shear buildings subjected to various earthquakes. The performance of this controller was evaluated regarding the uniform distribution of the maximum inter-story drifts and the reduction of the structural responses. Using this method, the maximum inter-story drifts of the structures were remarkably uniform in comparison to the uncontrolled structures. In addition, the maximum structural responses, especially the maximum inter-story drifts of the structures, significantly decreased.

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Authors and Affiliations

  1. Civil Engineering Department, K. N. Toosi University of Technology, No. 1346, Vali Asr Street, Mirdamad Intersection, Tehran, 1996715433, Iran

    Reza Karami Mohammadi

  2. Earthquake Engineering, Civil Engineering Department, K. N. Toosi University of Technology, Tehran, Iran

    Samin Najarzade

Authors
  1. Reza Karami Mohammadi
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  2. Samin Najarzade
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Correspondence to Reza Karami Mohammadi.

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Karami Mohammadi, R., Najarzade, S. Semi-Active Control of Structures Equipped With MR Dampers Based on Uniform Deformation Theory. Int J Civ Eng 16, 871–885 (2018). https://doi.org/10.1007/s40999-017-0213-8

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  • DOI: https://doi.org/10.1007/s40999-017-0213-8

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