Abstract
In this study, a varying/adapting cohesive approach is developed to model crack-healing procedure in reinforced shape memory composites. To this aim, the stress–strain behavior of SMA fiber in thermo-mechanical condition is converted into a traction–separation response between crack faces. The extended finite element formulation is employed to model crack in reinforced composites and to avoid remeshing while maintaining the required accuracy of results. Combination of XFEM to model arbitrary crack and traction–separation formulation enables the model to simulate mixed-mode crack propagation and crack-healing with different fiber orientations. Examining the results shows that the proposed model maintains the precision of direct modeling of SMA fibers while decreasing the computational costs and complexity of modeling significantly.
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