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A platform for research: civil engineering, architecture and urbanism
Identification de l'endommagement d'une poutre par analyse vibratoire
This article shows a numerical approach to determine the damage of a beam by carrying out nondestructive tests. The comparison of three methods of opposite analysis reveals that the method of Levenberg-Marquardt is adapted to the problems arising. The identification of the Young modulus of a beam by frequential analysis is used even if it is difficult to obtain many experimental Eigen frequencies. This is why, the use of the deflection curve for various frequencies lower than the 3th mode is proposed. The results obtained for distributions of different moduli Young are encouraging and make it possible to consider an experimental study. The 4th order center moment of the distribution of the errors can confirm to obtain the good optimal solution.
Identification de l'endommagement d'une poutre par analyse vibratoire
This article shows a numerical approach to determine the damage of a beam by carrying out nondestructive tests. The comparison of three methods of opposite analysis reveals that the method of Levenberg-Marquardt is adapted to the problems arising. The identification of the Young modulus of a beam by frequential analysis is used even if it is difficult to obtain many experimental Eigen frequencies. This is why, the use of the deflection curve for various frequencies lower than the 3th mode is proposed. The results obtained for distributions of different moduli Young are encouraging and make it possible to consider an experimental study. The 4th order center moment of the distribution of the errors can confirm to obtain the good optimal solution.
Identification de l'endommagement d'une poutre par analyse vibratoire
Dubé, Jean-François (author)
Revue Française de Génie Civil ; 8 ; 203-218
2004-02-01
16 pages
Article (Journal)
Electronic Resource
Unknown
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