Tag: ANSYS

2018-02-09-Dental

Seminarios GIEMA: Taller de modelado numérico de materiales compuestos reforzados con fibras tejidas

Fernando Barros, Jefferson Gamboa

In this work, we investigate the numerical modelling for the mechanical behaviour of woven fique-fibre reinforced composites, using the finite elements method (FEM) for different kind of forces and different woven fique-fibre configurations. The fique-fibre woven styles are taken from commercial models and validated by experimental data. This research has the objective of establishing a baseline for further studies looking for applications for this kind of material technology, depending on the mechanical behaviour obtained.

The FEM analysis is performed with the software Ansys, and for the woven fique fibre modelling we use the software Texgen. Initially, the woven-composite modelling is made to determine the equivalent elastic properties, according to the materials and the fibre-matrix relation. Then, the forces are applied to the model to analyse the mechanical behaviour.

2018-02-09-Dental

Seminarios GIEMA: Taller de segmentación y FEA para implantología oral

Lina Forero, Robert Castilla.

The aim of this study is to evaluate and compare the response of the maxilla bone, with an anisotropic nature, in the peri-implant region when osseointegrated implants are placed in different angles, based on the stress and strain distribution by the finite element method. We focus on implant models from brands available in the metropolitan area of Bucaramanga, Colombia. Twenty-seven models were fabricated to reproduce a portion of a maxilla bone (upper first molar region) with two types of implants which have different thread geometry (squared and v shaped) and material (Ti-6AL-4V ELI and grade IV Titanium). Compressive axial (150N) and oblique load (150 N at 45° angle) were applied to isotropic and anisotropic models of the bone tissues. Complete osseointegration was assumed. For data analysis, the maximum stress and strain (according to the von Misses criterion) were used. Results demonstrated that, the increasing of the implant inclination leads to a more critical behavior, especially for strain distribution which could not surpass the limit of 4000 microstrain. Oblique loading was more detrimental to stress and strain distribution than axial load, also, these were more efficiently distributed by squared thread implants. The proposed isotropic models in this study failed to represent the performance of real bone conditions which are more similar to an anisotropic model. Squared thread implants are a better option for osseointegrated dental implant treatments, even when inclined positions are required. More detailed models should be created to represent the use of bone allografts in a patient after bone resorption happened.

 

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Presented by Jon Reilly:

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Jorge Luis Chacón,  J. N. Reddy y Andrés González Estrada

GIEMA en XI Congreso Colombiano de Métodos Numéricos.

Participación de estudiantes de la Escuela de Ingeniería Mecánica en el XI Congreso Colombiano de Métodos Numéricos.

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K. Molina, D. Ortega, M. Martínez, and O. A. González-Estrada, “Modelado de la interacción fluido estructura (FSI) para el diseño de una turbina eólica Hawt,” in XI Congreso Colombiano de Métodos Numéricos, 2017, p. 1.

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W. M. Salamanca, S. Medina, and O. A. González-Estrada, “Análisis del efecto de la corrosión tipo picadura en los esfuerzos de una tubería para transporte de hidrocarburos utilizando el software de simulación Ansys,” in XI Congreso Colombiano de Métodos Numéricos, 2017, pp. 1–12.

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Investigación con sello UIS es presentada en congreso de métodos numéricos en España

El investigador y profesor de la Escuela de Ingeniería Mecánica, Andrés González Estrada, participó en representación de la Universidad Industrial de Santander en el Congreso de Métodos Numéricos CMN2017, realizado en Valencia, España.

Este evento, organizado por la Sociedad Española de Métodos Numéricos en Ingeniería (SEMNI) y la Asociación Portuguesa de Mecánica Teórica, Aplicada y Computacional (APMTAC), contó con la participación de investigadores, docentes y estudiantes interesados en los métodos numéricos y la mecánica computacional, y sus aplicaciones prácticas. En esta edición, el sitio de encuentro fue el Campus de Vera de la Universidad Politécnica de Valencia (UPV).

Gracias al apoyo del Programa de Movilidad de la Vicerrectoría de Investigación y Extensión, el profesor Andrés presentó ante todos los asistentes detalles de su proyecto de investigación denominado “Estudio del comportamiento mecánico de tuberías de material compuesto para el transporte de hidrocarburos por elementos finitos”.

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Detección de daños en una armadura unidimensional por medio del algoritmo de optimización de la luciérnaga y elementos finitos

Investigadores del grupo GIEMA publicaron resultados de su trabajo en la revista Avances:

J. M. Pachón, O. A. González-Estrada, and H. G. Sánchez Acevedo, “Detección de daños en una armadura unidimensional por medio del algoritmo de optimización de la luciérnaga y elementos finitos,” Rev. Av., vol. 13, no. 1, pp. 1–7, 2016.

http://www.unilibre.edu.co/bogota/ul/noticias/noticias-universitarias/2917-deteccion-de-danos-en-una-armadura-unidimensional-por-medio-del-algoritmo-de-optimizacion-de-la-luciernaga-y-elementos-finitos

Abstract

In this paper, we investigate the damage detection of structures seen as an optimization problem, using modal characterization to evaluate the dynamic response of the structure given a damage model. We implemented the firefly optimization algorithm with a simple numerical damage model to assess the performance of the method and its advantages for structural health monitoring (SHM). We show some implementation details and discuss the obtained results

Keywords:

Firefly algorithm, optimization, finite element method, modal analysis, structural health monitoring