Título: | MODEL FOR THE HIGH FREQUENCY RESPONSE OF LAMINATED CYLINDRICAL SHELLS | ||||||||||||||||||||||||||||||||||||||||
Autor: |
CARLOS ENRIQUE RIVAS ARONI |
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Colaborador(es): |
ARTHUR MARTINS BARBOSA BRAGA - Orientador |
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Catalogação: | 17/MAR/2003 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||||||||||||||||||||||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=3354&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=3354&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.3354 | ||||||||||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||||||||||
This dissertation addresses the problem of modeling the
dynamic response of laminated cylindrical shells in the
high frequency range -short wavelength-. In this range of
frequency, traditional theories fail to provide an
accurate result of the vibratory structural response; So,
in order to overcome this shortcoming, we employed a model
based on Reddys discrete layer-wise theory. In this method
the cylindrical shell is discretized in an arbitrary number
of layers in the radial direction, and a three dimensional
stress state is assumed in each one. Hence, the application
of this method let the representation of complexes
displacement elds through the thickness of the shell. This
characteristic is representative of displacement elds
associated to guided waves in the high frequency range. In
the frequency domain,the governing equations were written
in a state space form by applying a variational principle.
The solution of this state equation was obtained by
employing an algorithm based on a discrete version of the
Ricatti transformation.To validate the method proposed in
this dissertation, comparisons of the present work to the
exact wave-dispersion spectra were assessed with
excellent results. It indicates that the present method can
predict an accurate description of the dynamic response in
the high-frequency range. In the low frequency range, the
results of the theory of Reddy were compared with the nite
element method and, again, a good accuracy was obtained.
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