Comparative Study of Adhesive Elastoplastic Model Between LIGGGHTS Software and EDEM Software

Abstract

Maheandar Manokaran and Martin Morgeneyer

As of late, the Discrete Element Method (DEM) has been generally used to focus on the complex behavior of granular mate- rials. To apply the model accurately at the individual particle level, it is necessary to determine the model parameters at the particle level and consider the complexities of interfacial interactions. DEM models commonly used to model adhesions, such as JKR, DMT, linear cohesion models, elastoplastic models etc. There are lot of models are implemented in both open source and commercial software. One of the model is Adhesive elastoplastic model, which was implemented in commercial software EDEM. To create a user friendly and application demand, we implemented the same model in Open source software LIGGG- HTS. In this work, an adhesive elastoplastic contact (DEM) model for the mesoscopic level with 3D non-spherical particles is implemented in LIGGGHTS,fully target on accomplishing cohesive powder flowability.This model has undergone simulations involving uniaxial compression followed until failure. The contact model utilized in these simulations has been assessed against experimental data, specifically the flow function and compared with results obtained through EDEM simulations for limestone powder (ESKAL), chosen as a benchmark material for comprehensive analysis.The prediction of this work gives the deeper in- sights of cohesively in the form of contact plasticity and it is key parameter for the behavior of cohesive granular material. This outcomes gives a new opportunity for the user to use the model in open source depend upon their application and as wells the behavior of cohesive granular material.

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