Título: | COMPUTATIONAL MODELS FOR EVALUATION OF DAMAGE, STRESSES, AND ACTIONS IN STRUCTURES | ||||||||||||||||||||
Autor: |
ADEILDO SOARES RAMOS JUNIOR |
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Colaborador(es): |
RAUL ROSAS E SILVA - Orientador |
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Catalogação: | 09/NOV/2001 | 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=2080&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=2080&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.2080 | ||||||||||||||||||||
Resumo: | |||||||||||||||||||||
Numerical modeling is a valuable tool in the evaluation and
prediction of structural behavior from given experimental
data. This work presents a study of some problems of
identification of structural systems. The main objective is
the computer evaluation and interpretation of structural
parameters from the results of non-destructive mechanical
tests.Algorithms were developed and coded, in different
computational formats, to treat this problem.The
development is applicable to any type of structure modeled
by finite elements. Examples presented in this work are
sets of masses and springs, beams in pane bending, beams in
bending and torsion, arches, frames and trusses. The
determination of stiffness and mass terms, from local
and global information on displacements, strains and
frequencies, is discussed. The studies indicate that, using
the numerical techniques developed herein, it is possible
to determine a location and magnitude of damages occurred
in structures, from the static or dynamic response
data, resorting to limited information on the response of
the undamaged structure. Such techniques were extended to
the evaluation of stresses and loadings, by taking into
account effects of geometric nonlinearity. Criteria for
design of experiments are presented, which allow
for maximum sensitivity and minimum correlation of the
structural parameters under concern.Several examples are
presented to illustrate the theoretical and numerical
techniques developed herein.
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