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Structural health monitoring using optimising algorithms based on flexibility matrix approach and combination of natural frequencies and mode shapes

Structural health monitoring using optimising algorithms based on flexibility matrix approach and... In this paper, two methods, including flexibility matrix and combination of natural frequencies and mode shapes, are employed to detect the damage location and its severity by creating objective function, which is defined based on differences between the mathematical model and real structure. The damage of structures is modelled by a reduction in the elasticity modulus of the element. The finite element updating approaches used to make an optimisation problem to minimise objective function. In this study, particle swarm optimisation and charged system search as two novel algorithms are taken to find the best optimisation. A few damaged structures with different scenarios are solved to show superiority of each method over another. Keywords: damage detection; finite element; charge system search; particle swarm optimiser; objective function. Copyright © 2016 Inderscience Enterprises Ltd. Reference to this paper should be made as follows: Mehrian, Sh.Z., Amrei, S.A.R., Maniat, M. and Nowruzpour, S.M. (2016) ` based on flexibility matrix approach and combination of natural frequencies and mode shapes', Int. J. Structural Engineering, Vol. 7, No. 4, pp.398­411. Biographical notes: Sh. Zamani Mehrian graduated in Civil Engineering. Presently, she is a PhD student of Mechanical Engineering at Texas A&M University, Texas, USA. She http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Structural Engineering Inderscience Publishers

Structural health monitoring using optimising algorithms based on flexibility matrix approach and combination of natural frequencies and mode shapes

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Publisher
Inderscience Publishers
Copyright
Copyright © 2016 Inderscience Enterprises Ltd.
ISSN
1758-7328
eISSN
1758-7336
DOI
10.1504/IJSTRUCTE.2016.079287
Publisher site
See Article on Publisher Site

Abstract

In this paper, two methods, including flexibility matrix and combination of natural frequencies and mode shapes, are employed to detect the damage location and its severity by creating objective function, which is defined based on differences between the mathematical model and real structure. The damage of structures is modelled by a reduction in the elasticity modulus of the element. The finite element updating approaches used to make an optimisation problem to minimise objective function. In this study, particle swarm optimisation and charged system search as two novel algorithms are taken to find the best optimisation. A few damaged structures with different scenarios are solved to show superiority of each method over another. Keywords: damage detection; finite element; charge system search; particle swarm optimiser; objective function. Copyright © 2016 Inderscience Enterprises Ltd. Reference to this paper should be made as follows: Mehrian, Sh.Z., Amrei, S.A.R., Maniat, M. and Nowruzpour, S.M. (2016) ` based on flexibility matrix approach and combination of natural frequencies and mode shapes', Int. J. Structural Engineering, Vol. 7, No. 4, pp.398­411. Biographical notes: Sh. Zamani Mehrian graduated in Civil Engineering. Presently, she is a PhD student of Mechanical Engineering at Texas A&M University, Texas, USA. She

Journal

International Journal of Structural EngineeringInderscience Publishers

Published: Jan 1, 2016

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