Estrategia Global-Local Automatizada para o Método dos Elementos Finitos Generalizados

Resumo

This work presents an automation of the global-local strategy under the Generalized Finite
Element Method approach, evaluating its performance in the analysis of two-dimensional problems of
Linear Elastic Fracture Mechanics. An automated strategy for building local problems, defined in order
to follow the crack growth path, is proposed. Solutions of the local problems, obtained with reduced user
interference, enriches a single global problem. The automated creation of local problems significantly
reduces the time spent in the simulation, which can be quite high for problems involving the propagation
of defects. The implementation was carried out as an expansion of the INSANE (Interactive Structural

Analysis Environment) system, a free software project developed in the Department of Structural Engi-
neering of the Federal University of Minas Gerais. The proposed approach is validated by the numerical

simulation of problems with different characteristics, seeking the extraction of stress intensity factors for
opening modes I and II. Influences of the global-local analysis cycles and polynomial enrichments in the
global problem are considered.