Título: | A COUPLED MODEL FOR TWO-PHASE FLOW THROUGH ELASTOPLASTIC POROUS MEDIA | |||||||
Autor: |
NELSON INOUE |
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Colaborador(es): |
CELSO ROMANEL - Orientador DEANE DE MESQUITA ROEHL - Coorientador |
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Catalogação: | 21/DEZ/2005 | 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=7602&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=7602&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.7602 | |||||||
Resumo: | ||||||||
This dissertation studies a coupled flow and deformation
model for saturated and non-saturated soils, based on
Biot`s theory but taking into account the nonlinear
material behavior of soil. In the non-saturated condition
the fluid flow can be considered either as a two-phase or
an one-phase problem. In the two-phase case, the model
calculates the pressure of air and water simultaneously,
thus permitting the evaluation of the pore suction values
and the degree of saturation. Once known, the degree of
saturation is used for the determination of the relative
permeability of the soil considering the flow of water and
air, solving a problem that is nonlinear with respect to
permeability. In the one-phase flow, the pressure of air
is kept constant and equal to the atmospheric pressure.
The stress-strain nonlinear behavior of non-saturated
soils is modeled through the basic Barcelona model (BBM
model) based on plasticity theory and concepts from the
critical state behavior of soils. This model may be
understood as an extension of the modified Cam Clay model
frequently used for representation of the mechanical
behavior of saturated soils. The suction influence on the
shear resistance of non-saturated soils is examined
through some numerical applications. In this work, the
material nonlinearity of dry or saturated soils is also
simulated through the Lade & Kim elastoplastic model.
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