A semi-analytical approach to the study of the transient acoustic response of cylindrical shells

Auteurs-es

  • Cédric Leblond LEPTIAB, Université de la Rochelle, Av. Michel Crépeau, 17042 La Rochelle, Cedex 1, France
  • Jean-François Sigrist DCNS Propulsion, STS, 44620 La Montagne, France
  • Serguei Iakovlev Dept. of Engineering Mathematics and Internetworking, Dalhousie University, Halifax, B3J 2X4, Canada

Mots-clés :

Electric currents, Fourier analysis, Fourier series, Fourier transforms, Harmonic analysis, Mathematical transformations, Separation, Shells (structures), Underwater explosions, Acoustic responses, Analytical approaches, Computing, Cylindrical shells, Elastic structures, Fourier, Fourier modes, Frequency domains, Full elastic models, Interaction problems, Laplace variables, Matrix inversions, Numerical inversions, Semi-analytical methods, Series expansions, Weak shock waves

Résumé

A semi-analytical method related to the effects of a weak shock wave on submerged evacuated cylindrical elastic structure is presented. The circular shell/acoustic medium interaction problem has already been tackled in the frequency domain with a full elastic model by Pathak and Stepanishen. The approach is based on the methods of Laplace transform in time, Fourier series expansions and separations of variables in space. The solution consists of simple matrix inversions for each point of the Laplace variable and Fourier mode, numerical inversions of the Laplace transforms and Fourier series summations. the method is shown by computing the shell response to a weak underwater explosion.

Fichiers supplémentaires

Publié-e

2008-09-01

Comment citer

1.
Leblond C, Sigrist J-F, Iakovlev S. A semi-analytical approach to the study of the transient acoustic response of cylindrical shells. Canadian Acoustics [Internet]. 1 sept. 2008 [cité 13 févr. 2025];36(3):166-7. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2090

Numéro

Vol. 36 No. 3 (2008)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

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