Eventos Anais de eventos
MECSOL 2019
7th International Symposium on Solid Mechanics
Fatigue-Driven Delamination Modelling Using a Linear-Polynomial Traction-Separation Law
Submission Author:
Lucas Amaro de Oliveira , SP
Co-Authors:
Lucas Amaro de Oliveira, Mauricio Donadon
Presenter: Lucas Amaro de Oliveira
doi://10.26678/ABCM.MECSOL2019.MSL19-0077
Abstract
A constitutive damage model is proposed to predict static and high cycle fatigue-induced damage in carbon/epoxy composite laminates. This model accounts for fatigue-induced delamination in modes I, II and III either individually or combined without knowing the modes ratios a priori. The proposed formulation uses the linear-polynomial traction-separation law. The model estimates the strain energy release rate by using the J-integral method applied on the cohesive zone boundary. An algorithm identifies the elements in which the damage may nucleates and the elements at the crack front. The proposed formulation is implemented into ABAQUS/Explicit FE code within solid elements. The local part (at element level) of the algorithm is implemented in a user-defined material subroutine (VUMAT) and the non-local part (at structure level), in a VEXTERNALDB subroutine.
Keywords
Damage Mechanics, Fracture Mechanics, fatigue, Finite Elements
