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MecSol 2017
6th International Symposium on Solid Mechanics
ACTION PLANE FRACTURE CRITERIA APPLIED TO EXTENDED FINITE METHOD: A FRAMEWORK FOR ONSET AND CRACK PROPAGATION
Submission Author:
Marcus Angelo , SP
Co-Authors:
Volnei Tita, Marcelo Leite Ribeiro
Presenter: Marcus Angelo
doi://10.26678/ABCM.MecSol2017.MSL17-0151
Abstract
The concept of extended finite element method is reliable and useful for analyzing complex geometries in heavy nonlinear regimes since a delinking between mesh and geometric discontinuity is possible. Many authors have investigated this field, but 3D XFEM models applied to non-standard composite parts, such as tapered structures or joints, are rarely found in the literature. In the present work, a framework for evaluating structural behavior of composite structures by using Extended Finite Element Method has been developed and implemented. A new criterion for initiation and crack propagating direction definition based on Puck’s theory is presented in details. The proposed three dimensional Extended Finite Method model for composites is implemented through Abaqus’ subroutines, using optimization algorithms for computational efficiency. To verify the performance of the model to different stacking sequences and geometry, a sensibility study for the most important parameters of the model is also provided. Finally, experimental results from the literature are shown and used to verify the efficiency of the proposed approach.
Keywords
3D XFEM, Crack propagation, Puck’s theory, composite joints, tapered structures
