Escudo de la República de Colombia
Sistema Nacional de Biliotecas - Repositorio Institucional Universidad Nacional de Colombia Biblioteca Digital - Repositorio Institucional UN Sistema Nacional de Bibliotecas UN

Influencia del modelo del material y espacio de modelado en la precisión de una simulación con elementos finitos para predecir la deformación en silicona

Mesa-Múnera, Elizabeth and Ramírez-Salazar, Juan Fernando and Bischof, Walter F and Boulanger, Pierre and Branch Bedoya, John Willian (2012) Influencia del modelo del material y espacio de modelado en la precisión de una simulación con elementos finitos para predecir la deformación en silicona. Avances en Sistemas e Informática; Vol. 8, núm. 3 (2011); 63-70 Avances en Sistemas e Informática; Vol. 8, núm. 3 (2011); 63-70 1909-0056 1657-7663 .

Texto completo

[img]
Vista previa
PDF
1MB
[img] Microsoft Word
31kB

URL oficial: http://revistas.unal.edu.co/index.php/avances/arti...

Resumen

The realistic simulation of tool-tissue interactions is required for the development of surgical simulators. In this paper, we estimate the material properties of a silicone rubber with mechanical properties similar to brain tissue, by performing a standard compression test. Using the estimated parameters, we performed different finite element simulations of needle indentation into a block of the same tissue. We investigated the effect of material model (Neo-Hookean and Second Order Reduced Polynomial) and modeling space (3D and axisymmetric geometries) on the accuracy of the simulation. We demonstrated that material model, space and their interaction have a significant effect on the accuracy of the simulations. The most accurate combination corresponds to a 3D simulation using a Reduced Polynomial model. However, even for not-axisymmetric geometries, one can sacrifice some accuracy and use a simpler and faster modeling space (i.e. axisymmetric), at least for the simulations considered here, given a change in the modeling space has a smaller effect on accuracy than a change in the material model., The realistic simulation of tool-tissue interactions is required for the development of surgical simulators. In this paper, we estimate the material properties of a silicone rubber with mechanical properties similar to brain tissue, by performing a standard compression test. Using the estimated parameters, we performed different finite element simulations of needle indentation into a block of the same tissue. We investigated the effect of material model (Neo-Hookean and Second Order Reduced Polynomial) and modeling space (3D and axisymmetric geometries) on the accuracy of the simulation. We demonstrated that material model, space and their interaction have a significant effect on the accuracy of the simulations. The most accurate combination corresponds to a 3D simulation using a Reduced Polynomial model. However, even for not-axisymmetric geometries, one can sacrifice some accuracy and use a simpler and faster modeling space (i.e. axisymmetric), at least for the simulations considered here, given a change in the modeling space has a smaller effect on accuracy than a change in the material model.

Tipo de documento:Artículo - Article
Información adicional:Derechos de autor reservados
Palabras clave:Soft tissue characterization, brain indentation, Finite Element Method, Design of Experiments, Soft tissue characterization, brain indentation, Finite Element Method, Design of Experiments
Unidad administrativa:Revistas electrónicas UN > Avances en Sistemas e Informática
Código ID:23543
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :27 Junio 2014 14:35
Ultima modificación:18 Agosto 2014 16:25
Ultima modificación:18 Agosto 2014 16:25
Exportar:Clic aquí
Estadísticas:Clic aquí
Compartir:

Solamente administradores del repositorio: página de control del ítem

Vicerrectoría de Investigación: Número uno en investigación
Indexado por:
Indexado por Scholar Google WorldCat DRIVER Registry of Open Access Repositories OpenDOAR Metabiblioteca BDCOL OAIster Red de repositorios latinoamericanos DSpace BASE Open archives La referencia Colombiae Open Access Theses and Dissertations Tesis latinoamericanas CLACSO
Este sitio web se ve mejor en Firefox