Desenvolvimento de um simulador para problemas multi-fÃsicas

AUTOR(ES)

Eduardo Roberto Rodrigues de Brito Junior

DATA DE PUBLICAÇÃO

2007

RESUMO

Simulation of coupled natural phenomena, such as the evolution of material damage due to mechanical and chemical loads, are becoming more and more important in the engineering pratice. This was influenced by the growth of Computational Mechanics software industry. Despite the computational advance, it still applies software engiheering development techniques related to the seventies. The project and the implementation of simulators for coupled multi-physics presents a myriad of problems in such a way that they become impratical in a computational sense if powerful tools are not available to support the analyst. The Finite Element Method is a way to approximate a mathematical theory which describes physical behaviours. This method has been considered a powerful computational tool to solve differential and integral equations that arise in many fields of engineering. This work is aimed to present the implementation of a simulator for coupled phenomena through a language of patterns. Those patterns compose a system of abstractions, which are capable of representing the phenomena and their interaction with each other an with the solution algorithms employed by the simulator. The definitions of those patterns and their usage are presented within the a computational framework built for the automatic production of simulators based on the finite element method. This includes explanation about the simulator ans its layers: Kernel, Block, Group e Phenomenon. Two models were implemented to validate the simulator. This work is related to Danolexus project which analyses pipeline degradation due to corrosion and hydrogen embrittlement. This project is related to Network for Cooperative Research on Computational Modeling (RPCMod)

ASSUNTO(S)

mÃtodo do elemento finito coupled phenomena multi-fÃsicas multi-physics finite element method simulador engenharia mecanica simulator fenÃmenos acoplados

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