Título: | A FINITE ELEMENT ANALYSIS OF THE SKIN UNDER ACTION OF AXISYMMETRIC TISSUE EXPANDERS | ||||||||||||||||
Autor: |
CLAUDIO RIBEIRO CARVALHO |
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Colaborador(es): |
DJENANE CORDEIRO PAMPLONA - Orientador |
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Catalogação: | 20/FEV/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=1272&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=1272&idi=2 [es] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=1272&idi=4 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.1272 | ||||||||||||||||
Resumo: | |||||||||||||||||
Nowadays, soft tissue expanders are being increasingly,
used to create local skin flaps which
can cover relatively large tissue defects. This involves
inserting a silicon-rubber balloon
(prosthesis) in its collapsed state under the subcutaneous
tissue of the patient, closing the
incision, and then inflating the balloon slowly with a
saline fluid through a one way valve. The
valve is part of the balloon prosthesis. Obviously, the
skin expands in the form of a dome in
unison with the balloon underneath it.
In preliminary studies designed to evaluate the behavior of
skin created by soft tissue
expansion, the viscoelastic proprieties of skin were
ignored. The objective of the present work is
model skin as an isotropic homogeneous viscoelastic
material using the finite element method
for large deformation in axisymmetric expanders.
In finite element analysis we are using a linear
viscoelastic model with three different kinds of
elements, solid, shell and membrane, looking for the best
element to describe the model. We
are also making a parametric study, varying the thickness
of the elements and comparing the
results. To develop this finite element analysis, we are
using the ABAQUS program . The
methods have been validated using results from previous
experimental works .
In the future, we intend to model non-axisymmetric
expanders and apply this work to in-vivo
experiments.
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