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http://dx.doi.org/10.12989/sem.2018.65.6.721

Adaptive control of rotationally non-linear asymmetric structures under seismic loads  

Amini, Fereidoun (School of Civil Engineering, Iran University of Science and Technology)
Rezazadeh, Hassan (School of Civil Engineering, Iran University of Science and Technology)
Afshar, Majid Amin (Department of Technology and Engineering, Imam Khomeini International University Norouzian)
Publication Information
Structural Engineering and Mechanics / v.65, no.6, 2018 , pp. 721-730 More about this Journal
Abstract
This paper aims to inspect the effectiveness of the Simple Adaptive Control Method (SACM) to control the response of asymmetric buildings with rotationally non-linear behavior under seismic loads. SACM is a direct control method and was previously used to improve the performance of linear and non-linear structures. In most of these studies, the modeled structures were two-dimensional shear buildings. In reality, the building plans might be asymmetric, which cause the buildings to experience torsional motions under earthquake excitation. In this study, SACM is used to improve the performance of asymmetric buildings, and unlike conventional linear models, the non-linear inertial coupling terms are considered in the equations of motion. SACM performance is compared with the Linear Quadratic Regulator (LQR) algorithm. Moreover, the LQR algorithm is modified, so that it is appropriate for rotationally non-linear buildings. Active tuned mass dampers are used to improve the performance of the modeled buildings. The results show that SACM is successful in reducing the response of asymmetric buildings with rotationally non-linear behavior under earthquake excitation. Furthermore, the results of the SACM were very close to those of the LQR algorithm.
Keywords
rotational non-linearity; simple adaptive control method; active tuned mass damper; linear quadratic regulator; asymmetric buildings;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Amin Afshar, M. (2009), "Nonlinearities in asymmetric structures", Ph.D. Dissertation, Iran University of Science and Technology, Tehran, Iran.
2 Amin Afshar, M. and Amini, F. (2012), "Non-linear dynamics of asymmetric structures under 2:2:1 resonance", J. Non-Lin. Mech., 47(7), 823-835.   DOI
3 Amini, F. and Amin Afshar, M. (2011), "Saturation in asymmetric structures under internal resonance ", Acta Mech., 221, 353-368.   DOI
4 Amini, F. and Javanbakht, M. (2014), "Simple adaptive control of seismically excited structures with MR dampers", Struct. Eng. Mech., 52(2), 275-290.   DOI
5 Bitaraf, M. and Hurlebaus, S. (2013), "Semi-active adaptive control of seismically excited 20-story nonlinear building", Eng. Struct., 56, 2107-2118.
6 Barkana, I. and Guez, A. (1990), "Simple adaptive control for a class of non-linear systems with application to robotics", J. Contr., 52(1), 77-99.   DOI
7 Barkana, I. and Kaufman, H. (1993), "Simple adaptive control of large flexible space structures", IEEE Trans. Aerosp. Electr. Syst., 29(4), 1137-1149.   DOI
8 Beer, F.P., Johnston, E.R.J., Eisenberg, E.R. and Cornwell, P.J. (2013), Vector Mechanics for Engineers: Statics and Dynamics, 10th Edition, McGraw-Hill, New York, U.S.A.
9 Bitaraf, M., Hurlebaus, S. and Barroso, L.R. (2012), "Active and semi-active adaptive control for undamaged and damaged building structures under seismic load", Comput.-Aid. Civil Infrastruct. Eng., 27(1), 48-64.   DOI
10 Bitaraf, M., Ozbulut, O.E., Hurlebaus, S. and Barroso, L. (2010), "Application of semi-active control strategies for seismic protection of buildings with MR dampers", Eng. Struct., 32(10), 3040-3047.   DOI
11 Gaul, L., Hurlebaus, S., Wirnitzer, J. and Albrecht, H. (2008), "Enhanced damping of lightweight structures by semi-active joints", Acta Mech., 195, 249-261.   DOI
12 Housner, G.W., Bergman, L.A., Caughey, T.K., Chassiakos, A.G., Claus, R.O., Masri, S.F., Skelton, R.E., Soong, T.T., Spencer, B.F. and Yao, J.T.P. (1997), "Structural control: Past, present, and future", J. Eng. Mech., 123(9), 897-971.   DOI
13 Ozbulut, O.E., Bitaraf, M. and Hurlebaus, S. (2011), "Adaptive control of base-isolated structures against near-field earthquakes using variable friction dampers", Eng. Struct., 33(12), 3143-3154.   DOI
14 Khansefid, A. and Ahmadizadeh, M. (2015), "An investigation of the effects of structural nonlinearity on the seismic performance degradation of active and passive control systems used for supplemental energy dissipation", J. Vibr. Contr., 22(16), 1-11.
15 Korkmaz, S. (2011), "A review of active structural control: Challenges for engineering informatics", Comput. Struct., 89(23-24), 2113-2132.   DOI
16 Nazarimofrad, E. and Zahrai, S.M. (2016), "Seismic control of irregular multistory buildings using active tendons considering soil-structure interaction effect", Soil Dyn. Earthq. Eng., 89, 100-115.   DOI
17 Singh, M.P., Singh, S. and Moreschi, L.M. (2002), "Tuned mass dampers for response control of torsional buildings", Earthq. Eng. Struct. Dyn., 31(4), 749-769.   DOI
18 Sobel, K., Kaufman, H. and Mabius, L. (1982), "Implicit adaptive control for a class of MIMO systems", IEEE Trans. Aerosp. Electr. Syst., 18(5), 576-590.
19 Soong, T.T. and Manolis, G.D. (1987), "Active structures", J. Struct. Eng., 113(11), 2290-2302.   DOI
20 Yoshida, O. and Dyke, S.J. (2005), "Response control of full-scale irregular buildings using magnetorheological dampers", J. Struct. Eng., 131(5), 734-742.   DOI
21 Yoshida, O., Dyke, S.J., Giacosa, L.M. and Truman, K.Z. (2003), "Experimental verification of torsional response control of asymmetric buildings using MR dampers", Earthq. Eng. Struct. Dyn., 32(13), 2085-2105.   DOI