ANÁLISIS NUMÉRICA DE MEMBRANAS Y BIOMEMBRANAS VISCOELÁSTICAS SUBMETIDAS A EXPANSIÓN ASIMÉTRICA / ANÁLISE NUMÉRICA DE MEMBRANAS E BIOMEMBRANAS VISCOELÁSTICAS SUBMETIDAS À EXPANSÃO AXISSIMÉTRICA / NUMERICAL ANALYSIS OF VISCOELASTIC MEMBRANES AND BIOMEMBRANES SUBJECTED TO AXIALLY-SYMMETRIC EXPANSION

AUTOR(ES)

CRISTINA DE ABREU ALVIM

DATA DE PUBLICAÇÃO

1999

RESUMO

Tissue expansion is a well-known plastic surgery technique, based on the ability of biologic membranes to increase its surface area when a deformation is imposed. It is used to repair a wound area (scars, burns), to remove tattoos, in breast reconstruction, etc. This involves inserting a silicon-rubber prosthesis (expander) in its collapsed state under the subcutaneous tissue of the patient, closing the incision, and then inflating the expander slowly with a saline fluid through a one way valve. The skin expands in the form of a dome in unison with the balloon underneath it. The purpose of this work is modelling mathematically axially symmetric tissue expansion of biologic tissue, using Theory of Viscoelasticity for Finite Deformations.

ASSUNTO(S)

biomembranas biomembranes viscoelasticidade grandes deformacoes grandes deformaciones viscoelasticity large strain biomembranas viscoelasticidad

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