Areas of Research




Potential-Based Cohesive Zone Model

PPR model

Related Publications




Nonlinear Fracture Simulation


Related Publications




Material Characterization

PPR model

Related Publications




Polygonal & Polyhedral Discretizations

PPR model

Related Publications




Softwares

ABAQUS UEL for the PPR potential-based cohesive model

The PPR potential-based cohesive zone model is implemented in a commercial software, i.e. ABAQUS, as a user-defined element (UEL) subroutine. The source code of the UEL subroutine is provided for a two-dimensional linear cohesive element for educational purposes.


Integration of singular enrichment functions

A mapping method is developed to integrate weak singularities, which result from enrichment functions in the generalized/extended finite element method. The integration scheme is applicable to 2D and 3D problems including arbitrarily shaped triangles and tetrahedra. Implementation of the proposed scheme in existing codes is straightforward. Numerical examples for 2D and 3D problems demonstrate the accuracy and convergence properties of the technique.



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