A Novel Dual-Horizon Peridynamic and Discrete Element Method Coupling for the Modelling of Solid Particle Impact

Abstract

Recognizing the limitations of existing erosion models, which predominantly rely on statistical ad-hoc approaches fitted to experimental data, this research proposes a more fundamental approach based on non-local continuum mechanics and contact modeling capabilities, aiming to capture the underlying physical phenomena more accurately.
 
The core of this work is the development and application of a Dual-horizon Peridynamics (DHPD) and DEM coupling method, designed to overcome the computational inefficiencies and physical inaccuracies encountered in other modeling techniques. This new approach leverages the strength of PD in addressing non-local interactions and the efficacy of DEM in simulating discrete contact phenomena.
 
Significant findings from this work include an innovative DHPD-DEM coupling method that abstracts each object as a single DEM particle, significantly reducing computational time spent on contact checking. This coupling is seen as a critical step toward a more comprehensive solution, although it still requires further development to address its current limitations.

Bio

Kinan Bezem, Post-doctoral Research Associate at the University of Tennessee, Knoxville, graduated with distinction in advanced mechanical engineering from the University of Strathclyde in Scotland. He then completed a PhD through the Centre for Doctoral Training for Wind and Marine Energy Systems at the University of Edinburgh, focusing on the development of a novel dual-horizon peridynamics and discrete element method coupling. Currently, he is conducting research on modelling adhesion in peridynamics at UT, with primary interests in computational modeling, fracture mechanics.