Journal ArticleDOI
XFEM simulation of delamination in composite laminates
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In this article, the extended finite element method (XFEM) is extended to simulate delamination problems in composite laminates, which accounts for both interlaminar and intralaminar crack propagation.Abstract:
In this paper, the extended finite element method (XFEM) is extended to simulate delamination problems in composite laminates. A crack-leading model is proposed and implemented in the ABAQUS® to discriminate different delamination morphologies, i.e., the 0°/0° interface in unidirectional laminates and the 0°/90° interface in multidirectional laminates, which accounts for both interlaminar and intralaminar crack propagation. Three typical delamination problems were simulated and verified. The results of single delamination in unidirectional laminates under pure mode I, mode II, and mixed mode I/II correspond well with the analytical solutions. The results of multiple delaminations in unidirectional laminates are in good agreement with experimental data. Finally, using a recently proposed test that characterizes the interaction of delamination and matrix cracks in cross-ply laminates, the present numerical results of the delamination migration caused by the coupled failure mechanisms are consistent with experimental observations.read more
Citations
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Journal ArticleDOI
Finite element modeling strategies for 2D and 3D delamination propagation in composite DCB specimens using VCCT, CZM and XFEM approaches
TL;DR: In this article, a composite double cantilever beam (DCB) specimen is modeled in ABAQUS and delamination propagation is simulated using three numerical methods: Virtual crack closure technique (VCCT), cohesive zone modeling (CZM), and extended finite element method (XFEM).
Journal ArticleDOI
Integrated XFEM-CE analysis of delamination migration in multi-directional composite laminates
TL;DR: In this paper, an integrated extended finite element method (XFEM) and cohesive element (CE) method for three-dimensional (3D) delamination migration in multi-directional composite laminates, and validates the results with experiment performed on a double-cantilever beam (DCB).
Journal ArticleDOI
Modelling delamination migration in angle-ply laminates
TL;DR: In this article, a numerical study of the delamination migration in angle-ply laminates observed in experiments reported in the literature is presented, and the effect of load offset on the locations of migration is captured.
Journal ArticleDOI
XFEM-based model for simulating zigzag delamination growth in laminated composites under mode I loading
TL;DR: In this article, a new crack initiation model was developed, which took a quadratic criterion as the crack initiation criterion and the direction orthogonal to the maximum principal stress was the crack growth direction.
Journal ArticleDOI
A moving interface finite element formulation for layered structures
TL;DR: In this article, a computational formulation based on moving mesh methodology and interface modeling able to simulate debonding mechanisms in multilayered composite beams is proposed, which reproduces quasi-static and fast crack propagation in layered structures and, despite existing models available in the literature, a reduced number of finite elements is required to reproduce debonding mechanism.
References
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Journal ArticleDOI
A finite element method for crack growth without remeshing
TL;DR: In this article, a displacement-based approximation is enriched near a crack by incorporating both discontinuous elds and the near tip asymptotic elds through a partition of unity method.
Journal ArticleDOI
Finite element interface models for the delamination analysis of laminated composites: mechanical and computational issues
Giulio Alfano,M. A. Crisfield +1 more
TL;DR: In this paper, a finite element analysis of delamination in laminated composites is addressed using interface elements and an interface damage law, where the principles of linear elastic fracture mechanics are indirectly used by equating the area underneath the traction/relative displacement curve to the critical energy release rate of the mode under examination.
Journal ArticleDOI
A new method for modelling cohesive cracks using finite elements
TL;DR: In this paper, a model which allows the introduction of displacements jumps to conventional finite elements is developed, where the path of the discontinuity is completely independent of the mesh structure.
Journal ArticleDOI
Accurate simulation of delamination growth under mixed-mode loading using cohesive elements: Definition of interlaminar strengths and elastic stiffness
TL;DR: In this paper, a methodology for predicting accurately the propagation of delamination under mixed-mode fracture with cohesive elements is proposed, where relations between the interlaminar strengths and the penalty stiffness are proposed which ensure a correct energy dissipation when delamination propagates.
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