Estudo teórico e numérico de modelos constitutivos de ligas com memória de forma e associação com sistemas vibratórios
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFU |
Texto Completo: | https://repositorio.ufu.br/handle/123456789/14952 |
Resumo: | In recent times, much research effort has been undertaken aiming at the development of the so-called smart materials, understood as those that exhibit coupling between two or more physical domains in such a way that, when stimulated externally, they undergo controlled variations of some of their properties, such as viscosity, stiffness, volume or electrical conductivity. The degree of maturity of the technology of smart materials and structures is confirmed by numerous examples of applications found in industrial products. The present work is dedicated to the study of shape memory alloys, which are considered as being some of the most promising smart materials in terms of potentiality for industrial innovation. Those materials present the capacity of, once submitted to external loads, recovering their original form and dimensions through the application of thermal cycles or by removing the load. This behavior is due to two effects exhibited by those materials: shape memory and pseudoelasticity. The present dissertation reports the study carried-out by the author concerning some of the most relevant constitutive models intended for the description of the thermomechanical behavior of shape memory alloys, based on assumed transformation kinetics and on internal variables with constraints. The understanding of such models is considered to be essential for the development of modeling procedures of intelligent devices. After the description of the potentiality of applications of the shape memory alloys in the context of the smart material and structures technology and the assessment of the most relevant phenomenological aspects, specially the underlying phase transformations, the formulations of some constitutive models, chosen among those considered to be the most representative ones, are described, namely: models with assumed transformation kinetics (Tanaka, Liang-Rogers, Brinson, and Boyd-Lagoudas models) and models based on internal variables with constraints (modified Fremond and Savi and coauthors models). Numerical simulations are carried-out with the aim of evaluating the main features of the models considered and validating the numerical implementations by comparisons with results extracted from the literature. Afterwards, the analytical developments and numerical simulations regarding the incorporation of the Liang- Rogers model in a single-degree-of-freedom vibrating system are presented, enabling to evaluate the interest in using shape memory alloys for the purpose of vibration control. The study reported herein has been developed in the context of the National Institute of Science and Technology of Smart Structures in Engineering, leaded by the Structural Mechanics Laboratory Prof. J.E.T. Reis, of the School of Mechanical Engineering of the Federal University of Uberlândia, which is dedicated to the study of the foundations and applications of intelligent materials to various problems of engineering as well as to multidisciplinary problems. |
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2016-06-22T18:40:37Z2014-09-092016-06-22T18:40:37Z2011-04-29PINTO, Aurélio Alves. Theoretical and numerical study of constitutive models of shape memory alloys and their association to vibrating systems. 2011. 114 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2011.https://repositorio.ufu.br/handle/123456789/14952In recent times, much research effort has been undertaken aiming at the development of the so-called smart materials, understood as those that exhibit coupling between two or more physical domains in such a way that, when stimulated externally, they undergo controlled variations of some of their properties, such as viscosity, stiffness, volume or electrical conductivity. The degree of maturity of the technology of smart materials and structures is confirmed by numerous examples of applications found in industrial products. The present work is dedicated to the study of shape memory alloys, which are considered as being some of the most promising smart materials in terms of potentiality for industrial innovation. Those materials present the capacity of, once submitted to external loads, recovering their original form and dimensions through the application of thermal cycles or by removing the load. This behavior is due to two effects exhibited by those materials: shape memory and pseudoelasticity. The present dissertation reports the study carried-out by the author concerning some of the most relevant constitutive models intended for the description of the thermomechanical behavior of shape memory alloys, based on assumed transformation kinetics and on internal variables with constraints. The understanding of such models is considered to be essential for the development of modeling procedures of intelligent devices. After the description of the potentiality of applications of the shape memory alloys in the context of the smart material and structures technology and the assessment of the most relevant phenomenological aspects, specially the underlying phase transformations, the formulations of some constitutive models, chosen among those considered to be the most representative ones, are described, namely: models with assumed transformation kinetics (Tanaka, Liang-Rogers, Brinson, and Boyd-Lagoudas models) and models based on internal variables with constraints (modified Fremond and Savi and coauthors models). Numerical simulations are carried-out with the aim of evaluating the main features of the models considered and validating the numerical implementations by comparisons with results extracted from the literature. Afterwards, the analytical developments and numerical simulations regarding the incorporation of the Liang- Rogers model in a single-degree-of-freedom vibrating system are presented, enabling to evaluate the interest in using shape memory alloys for the purpose of vibration control. The study reported herein has been developed in the context of the National Institute of Science and Technology of Smart Structures in Engineering, leaded by the Structural Mechanics Laboratory Prof. J.E.T. Reis, of the School of Mechanical Engineering of the Federal University of Uberlândia, which is dedicated to the study of the foundations and applications of intelligent materials to various problems of engineering as well as to multidisciplinary problems.Ultimamente tem-se investido grande esforço em pesquisas com vistas ao desenvolvimento dos chamados materiais inteligentes, entendidos como aqueles que exibem acoplamento de dois ou mais domínios físicos, de modo que, quando externamente estimulados, sofrem alterações controladas de algumas propriedades como a viscosidade, volume, rigidez, resistência elétrica e condutividade. O grau de amadurecimento da tecnologia de materiais e estruturas inteligentes é comprovado pela existência de numerosos exemplos de utilização em produtos industriais. O presente trabalho é dedicado ao estudo das ligas com memória de forma (shape memory alloys), que são considerados como um dos materiais inteligentes mais promissores no tocante às inovações industriais. Trata-se de materiais que possuem a capacidade de, uma vez submetidos a cargas externas, recuperar sua forma e dimensões originais quando sujeitos a ciclos térmicos apropriados ou quando o carregamento é retirado. Esses materiais apresentam duas propriedades especiais que os diferenciam dos outros materiais, a memória de forma, propriamente dita, e a pseudoelasticidade. O presente memorial reporta o estudo desenvolvido pelo autor acerca de alguns dos principais modelos constitutivos que foram desenvolvidos para a representação do comportamento termomecânico de materiais com memória de forma. A compreensão destes modelos é essencial para o desenvolvimento de procedimentos de modelagem de dispositivos inteligentes. Após a descrição das potencialidades de aplicação no contexto da tecnologia de estruturas inteligentes e da fenomenologia subjacente ao comportamento das ligas com memória de forma, notadamente as transformações de fase austenitamartensita, apresentam-se as formulações de alguns modelos constitutivos, selecionados dentre aqueles considerados os mais representativos, incluídos em duas categorias distintas, a saber: modelos com cinética de transformação assumida (modelos de Tanaka, de Liang-Rogers, de Brinson, e de Boyd-Lagoudas) e modelos baseados em variáveis internas (modelos de Fremond modificado e de Savi e colaboradores). Em seguida, são apresentados resultados de simulações numéricas realizadas com o objetivo de avaliar as principais características dos modelos estudados e validar as implementações realizadas mediante confrontação com resultados extraídos da literatura. Por fim, são apresentados os desenvolvimentos analíticos e simulações numéricas realizadas para incorporação do modelo de Liang-Rogers em um sistema vibratório de um grau de liberdade, que permitiu comprovar o potencial de utilização dos materiais com memória de forma para o controle de vibrações. O estudo realizado se insere nas atividades desenvolvidas no âmbito do Instituto Nacional de Ciência e Tecnologia de Estruturas Inteligentes em Engenharia, sediado pelo Laboratório de Mecânica de Estruturas Prof. José Eduardo Tannús Reis - LMEst, da Faculdade de Engenharia Mecânica da UFU, que se dedica ao estudo dos fundamentos e aplicações de materiais inteligentes em diversos tipos de problemas de engenharia e problemas multidisciplinares.Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorMestre em Engenharia Mecânicaapplication/pdfporUniversidade Federal de UberlândiaPrograma de Pós-graduação em Engenharia MecânicaUFUBREngenhariasLigas com memória de formaModelos constitutivosAbsorvedor dinâmicoMateriais piezoelétricosMateriais inteligentesShape memory alloysConstitutive modelsDynamic absorbersCNPQ::ENGENHARIAS::ENGENHARIA MECANICAEstudo teórico e numérico de modelos constitutivos de ligas com memória de forma e associação com sistemas vibratóriosTheoretical and numerical study of constitutive models of shape memory alloys and their association to vibrating systemsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisRade, Domingos Alveshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781681T7Lima, Antônio Marcos Gonçalves dehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4766019D6Paula, Aline Souza dehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4771690E0http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4139286P1Pinto, Aurélio Alvesinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFUinstname:Universidade Federal de Uberlândia (UFU)instacron:UFUTHUMBNAILEstudoTeoricoNumerico.pdf.jpgEstudoTeoricoNumerico.pdf.jpgGenerated Thumbnailimage/jpeg1232https://repositorio.ufu.br/bitstream/123456789/14952/3/EstudoTeoricoNumerico.pdf.jpg1c4aef8abdfc74c298e141461edd03f8MD53ORIGINALEstudoTeoricoNumerico.pdfapplication/pdf2678409https://repositorio.ufu.br/bitstream/123456789/14952/1/EstudoTeoricoNumerico.pdfa5934e3d01a86658c9708d0d0e36d9b5MD51TEXTEstudoTeoricoNumerico.pdf.txtEstudoTeoricoNumerico.pdf.txtExtracted texttext/plain159814https://repositorio.ufu.br/bitstream/123456789/14952/2/EstudoTeoricoNumerico.pdf.txt59d7f33b439e48cae4751b08ec66d859MD52123456789/149522016-06-23 04:09:51.472oai:repositorio.ufu.br:123456789/14952Repositório InstitucionalONGhttp://repositorio.ufu.br/oai/requestdiinf@dirbi.ufu.bropendoar:2016-06-23T07:09:51Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU)false |
dc.title.por.fl_str_mv |
Estudo teórico e numérico de modelos constitutivos de ligas com memória de forma e associação com sistemas vibratórios |
dc.title.alternative.eng.fl_str_mv |
Theoretical and numerical study of constitutive models of shape memory alloys and their association to vibrating systems |
title |
Estudo teórico e numérico de modelos constitutivos de ligas com memória de forma e associação com sistemas vibratórios |
spellingShingle |
Estudo teórico e numérico de modelos constitutivos de ligas com memória de forma e associação com sistemas vibratórios Pinto, Aurélio Alves Ligas com memória de forma Modelos constitutivos Absorvedor dinâmico Materiais piezoelétricos Materiais inteligentes Shape memory alloys Constitutive models Dynamic absorbers CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
title_short |
Estudo teórico e numérico de modelos constitutivos de ligas com memória de forma e associação com sistemas vibratórios |
title_full |
Estudo teórico e numérico de modelos constitutivos de ligas com memória de forma e associação com sistemas vibratórios |
title_fullStr |
Estudo teórico e numérico de modelos constitutivos de ligas com memória de forma e associação com sistemas vibratórios |
title_full_unstemmed |
Estudo teórico e numérico de modelos constitutivos de ligas com memória de forma e associação com sistemas vibratórios |
title_sort |
Estudo teórico e numérico de modelos constitutivos de ligas com memória de forma e associação com sistemas vibratórios |
author |
Pinto, Aurélio Alves |
author_facet |
Pinto, Aurélio Alves |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Rade, Domingos Alves |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781681T7 |
dc.contributor.referee1.fl_str_mv |
Lima, Antônio Marcos Gonçalves de |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4766019D6 |
dc.contributor.referee2.fl_str_mv |
Paula, Aline Souza de |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4771690E0 |
dc.contributor.authorLattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4139286P1 |
dc.contributor.author.fl_str_mv |
Pinto, Aurélio Alves |
contributor_str_mv |
Rade, Domingos Alves Lima, Antônio Marcos Gonçalves de Paula, Aline Souza de |
dc.subject.por.fl_str_mv |
Ligas com memória de forma Modelos constitutivos Absorvedor dinâmico Materiais piezoelétricos Materiais inteligentes |
topic |
Ligas com memória de forma Modelos constitutivos Absorvedor dinâmico Materiais piezoelétricos Materiais inteligentes Shape memory alloys Constitutive models Dynamic absorbers CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
dc.subject.eng.fl_str_mv |
Shape memory alloys Constitutive models Dynamic absorbers |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
description |
In recent times, much research effort has been undertaken aiming at the development of the so-called smart materials, understood as those that exhibit coupling between two or more physical domains in such a way that, when stimulated externally, they undergo controlled variations of some of their properties, such as viscosity, stiffness, volume or electrical conductivity. The degree of maturity of the technology of smart materials and structures is confirmed by numerous examples of applications found in industrial products. The present work is dedicated to the study of shape memory alloys, which are considered as being some of the most promising smart materials in terms of potentiality for industrial innovation. Those materials present the capacity of, once submitted to external loads, recovering their original form and dimensions through the application of thermal cycles or by removing the load. This behavior is due to two effects exhibited by those materials: shape memory and pseudoelasticity. The present dissertation reports the study carried-out by the author concerning some of the most relevant constitutive models intended for the description of the thermomechanical behavior of shape memory alloys, based on assumed transformation kinetics and on internal variables with constraints. The understanding of such models is considered to be essential for the development of modeling procedures of intelligent devices. After the description of the potentiality of applications of the shape memory alloys in the context of the smart material and structures technology and the assessment of the most relevant phenomenological aspects, specially the underlying phase transformations, the formulations of some constitutive models, chosen among those considered to be the most representative ones, are described, namely: models with assumed transformation kinetics (Tanaka, Liang-Rogers, Brinson, and Boyd-Lagoudas models) and models based on internal variables with constraints (modified Fremond and Savi and coauthors models). Numerical simulations are carried-out with the aim of evaluating the main features of the models considered and validating the numerical implementations by comparisons with results extracted from the literature. Afterwards, the analytical developments and numerical simulations regarding the incorporation of the Liang- Rogers model in a single-degree-of-freedom vibrating system are presented, enabling to evaluate the interest in using shape memory alloys for the purpose of vibration control. The study reported herein has been developed in the context of the National Institute of Science and Technology of Smart Structures in Engineering, leaded by the Structural Mechanics Laboratory Prof. J.E.T. Reis, of the School of Mechanical Engineering of the Federal University of Uberlândia, which is dedicated to the study of the foundations and applications of intelligent materials to various problems of engineering as well as to multidisciplinary problems. |
publishDate |
2011 |
dc.date.issued.fl_str_mv |
2011-04-29 |
dc.date.available.fl_str_mv |
2014-09-09 2016-06-22T18:40:37Z |
dc.date.accessioned.fl_str_mv |
2016-06-22T18:40:37Z |
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info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
PINTO, Aurélio Alves. Theoretical and numerical study of constitutive models of shape memory alloys and their association to vibrating systems. 2011. 114 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2011. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufu.br/handle/123456789/14952 |
identifier_str_mv |
PINTO, Aurélio Alves. Theoretical and numerical study of constitutive models of shape memory alloys and their association to vibrating systems. 2011. 114 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2011. |
url |
https://repositorio.ufu.br/handle/123456789/14952 |
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Universidade Federal de Uberlândia |
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Programa de Pós-graduação em Engenharia Mecânica |
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UFU |
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BR |
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Engenharias |
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Universidade Federal de Uberlândia |
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