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J.V.A. Santos, C.M. Mota Soares, C.A. Mota Soares, H.L.G. Pina, "A Damage Identification Numerical Model based on the Sensitivity of Orthogonal Conditions", in B.H.V. Topping, (Editor), "Advances in Computational Structural Mechanics", Civil-Comp Press, Edinburgh, UK, pp 215-222, 1998. doi:10.4203/ccp.55.9.8

Abstract

A novel numerical technique for the damage identification of composite structures is presented. The laminated structure is modelled by finite elements. When the structure undergoes some kind of damage, its stiffness is reduced, clanging the dynamic response. By considering the mode shapes orthogonality conditions sensitivities of the undamaged and damaged structure, an algorithm is formulated, which calculates a damage parameter in each finite element. The damage parameter is directly related to the stiffness reduction of the damaged finite element. The proposed numerical model allows the identification of multiple damage and does not need to know a prior; the probable areas of damage. The algorithm is applied to a laminated rectangular plate free in space and its efficiency is demonstrated through a damage simulation.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 55 ADVANCES IN COMPUTATIONAL STRUCTURAL MECHANICS Edited by: B.H.V. Topping Paper IX.8 A Damage Identification Numerical Model based on the Sensitivity of Orthogonal Conditions J.V.A. Santos, C.M. Mota Soares, C.A. Mota Soares and H.L.G. Pina IDMEC/IST, Lisbon, Portugal doi:10.4203/ccp.55.9.8 purchase the full-text of this paper Full Bibliographic Reference for this paper J.V.A. Santos, C.M. Mota Soares, C.A. Mota Soares, H.L.G. Pina, "A Damage Identification Numerical Model based on the Sensitivity of Orthogonal Conditions", in B.H.V. Topping, (Editor), "Advances in Computational Structural Mechanics", Civil-Comp Press, Edinburgh, UK, pp 215-222, 1998. doi:10.4203/ccp.55.9.8 Abstract A novel numerical technique for the damage identification of composite structures is presented. The laminated structure is modelled by finite elements. When the structure undergoes some kind of damage, its stiffness is reduced, clanging the dynamic response. By considering the mode shapes orthogonality conditions sensitivities of the undamaged and damaged structure, an algorithm is formulated, which calculates a damage parameter in each finite element. The damage parameter is directly related to the stiffness reduction of the damaged finite element. The proposed numerical model allows the identification of multiple damage and does not need to know a prior; the probable areas of damage. The algorithm is applied to a laminated rectangular plate free in space and its efficiency is demonstrated through a damage simulation. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £95 +P&P)
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