Documents disponibles écrits par cet auteur

Identification of concentrated damages in euler-bernoulli beams under static loads / G. Buda in Journal of engineering mechanics, Vol. 133 N°8 (Août 2007) 

Public ISBD [article]  in Journal of engineering mechanics > Vol. 133 N°8 (Août 2007) . - pp.942–956. Titre : Identification of concentrated damages in euler-bernoulli beams under static loads Type de document : texte imprimé Auteurs : G. Buda, Auteur ; S. Caddemi, Auteur Année de publication : 2007 Article en page(s) : pp.942–956. Note générale : Applied mechanics Langues : Anglais (eng) Mots-clés : Damage  Beams  Static  loads  Parameters  Stiffness  Structural  elements Résumé : An identification procedure of concentrated damages in Euler-Bernoulli beams under static loads is presented in this work. The direct analysis problem is solved first by modeling concentrated damages as Dirac’s delta distributions in the flexural stiffness. Closed-form solutions for both statically determinate and indeterminate beams are presented in terms of damage intensities and positions. On this basis, for the inverse damage identification problem, a nonquadratic optimization procedure is proposed. The presented procedure relies on the minimization of an error function measuring the error between the analytical model response and experimental data. The procedure allows to recognize “a posteriori” some sufficient conditions for the uniqueness of the solution of the damage identification problem. The influence of the instrumental noise on the identified parameters is also explored. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282007%29133%3A8%2894 [...] [article] Identification of concentrated damages in euler-bernoulli beams under static loads [texte imprimé] / G. Buda, Auteur ; S. Caddemi, Auteur . - 2007 . - pp.942–956. Applied mechanics Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 133 N°8 (Août 2007) . - pp.942–956. Mots-clés : Damage  Beams  Static  loads  Parameters  Stiffness  Structural  elements Résumé : An identification procedure of concentrated damages in Euler-Bernoulli beams under static loads is presented in this work. The direct analysis problem is solved first by modeling concentrated damages as Dirac’s delta distributions in the flexural stiffness. Closed-form solutions for both statically determinate and indeterminate beams are presented in terms of damage intensities and positions. On this basis, for the inverse damage identification problem, a nonquadratic optimization procedure is proposed. The presented procedure relies on the minimization of an error function measuring the error between the analytical model response and experimental data. The procedure allows to recognize “a posteriori” some sufficient conditions for the uniqueness of the solution of the damage identification problem. The influence of the instrumental noise on the identified parameters is also explored. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282007%29133%3A8%2894 [...]