1. Repositório Institucional - Universidade Federal de Uberlândia
2. Faculdade de Engenharia Mecânica (FEMEC)
3. TESE - Engenharia Mecânica

Tipo do documento:	Tese
Tipo de acesso:	Acesso Aberto
Título:	Contact mesh approach in explicit finite element method: an application to a severe contact problem
Autor(es):	Felice Neto, Fábio Raffael
Primeiro orientador:	Oliveira, Sonia Aparecida Goulart de
Primeiro coorientador:	Weyler, Rafael
Primeiro membro da banca:	Souza, Francisco Jose
Segundo membro da banca:	Silva Jr, Washington Martins
Terceiro membro da banca:	Batalha, Gilmar Ferreira
Quarto membro da banca:	Landre Jr, Janes
Resumo:	The contact problem in Finite Element Method formulations is characterized as an optimization problem, in which the boundary conditions generate a contact penetration gap that must be minimized to maintain the physics of the problem. Normally the contact initiation depends on a search frequency and bodies’ velocities, resulting inconsiderable errors when in severe contact cases. So this work aims to propose a contact mesh approach in an Explicit Finite Element Method. This contact mesh links the probable contact regions and minimizes the potential error. To validate the material formulation and properties a tensile strength experiment was simulated. And in order to test the method efficiency, a microindentation experiment that represents a severe contact problem was simulated using explicit and implicit time integration methods. As results both methods showed similar good results when compared to experimental tests, but the implicit approach had better results in total time execution. It was possible to understand the deformation phenomenon in the microindentation test and also other related phenomena, such as the stress field and the pile up.
Palavras-chave:	Finite Element Method Contact mesh Microindentation simulation Explicit finite element method
Área(s) do CNPq:	CNPQ::ENGENHARIAS::ENGENHARIA MECANICA::MECANICA DOS SOLIDOS
Idioma:	eng
País:	Brasil
Editora:	Universidade Federal de Uberlândia
Programa:	Programa de Pós-graduação em Engenharia Mecânica
Referência:	FELICE-NETO, Fabio Raffael. Contact mesh approach in explicit finite element method: an application to a severe contact problem, 2016. 135f. Tese, Universidade Federal de Uberlândia, Uberlândia, 2016. Programa de Pós-graduação em Engenharia Mecânica.
Identificador do documento:	http://dx.doi.org/10.14393/ufu.te.2017.3
URI:	https://repositorio.ufu.br/handle/123456789/20391
Data de defesa:	10-Out-2016
Aparece nas coleções:	TESE - Engenharia Mecânica

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