Cálculo direto dos fatores de intensidade de tensão pelo método dos elementos finitos

Autor: Jairo Hernando Caicedo Bolaños Orientador: Artur Portela Programa de Pós graduação em Estruturas e Construção Civil Brasília, Abril de 2015. This paper is concerned with the direct computation of stress intensity factors in the finite element analysis of the mixed-mode deformation of homogeneous cracked plates. The direct computation of stress intensity factors is a consequence of a regularization procedure that uses a singular particular solution of the crack problem to introduce the stress intensity factors as additional in the primary unknowns problem. In this paper, the singular term of Williams’ eigen expansion, derived for a semi-infinite crack, is used to regularize the elastic field of an edge-cracked