Eventos Anais de eventos
MECSOL 2019
7th International Symposium on Solid Mechanics
Stress intensity factors evaluation using an enriched dual boundary element method formulation
Submission Author:
Heider Andrade , SP
Co-Authors:
Heider Andrade, Edson Denner Leonel
Presenter: Heider Andrade
doi://10.26678/ABCM.MECSOL2019.MSL19-0033
Abstract
In this paper, an enriched formulation of the boundary element method is applied to directly evaluate the stress intensity factors (SIFs) of plane crack problems. A novel shifted enrichment crack tip function is used to preserve the meaning of physical displacements for the nodal parameters. Only two additional degrees of freedom, associated to the SIFs, are introduced per crack tip. To accommodate these new parameters, a crack tying constrain is used. Some numerical examples are presented to demonstrate the accuracy of the direct method. The results are compared with the answers obtained with the J-integral (indirect method) and with those available in the literature.
Keywords
Stress intensity factors, linear-elastic fracture mechanics, enriched formulation, extended dual boundary element method
