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Volume 107
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Discrete element modeling of shear cell experiments with cohesive wooden spheres (Open Access)
Klidi Qyteti a *, Salvatore la Manna b, Enric Illana a, Diego Barletta b, Massimo Poletto b, Viktor Scherer a
a Department of Energy Plant Technology, Ruhr-University Bochum, Universitätsstraße 150, 44780, Bochum, Germany
b Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, Fisciano, 84084, SA, Italy
10.1016/j.partic.2025.10.006
Volume 107, December 2025, Pages 300-312
Received 2 May 2025, Revised 25 September 2025, Accepted 8 October 2025, Available online 18 October 2025, Version of Record 11 November 2025.
E-mail: qyteti@leat.rub.de
Highlights

• Experimental measurements using the Schulze ring shear tester.

• Analysis of shear behavior in cohesive granular systems.

• Evaluation of a cost-effective cohesion model in DEM simulation.


Abstract

In particle systems, understanding mechanical interactions between particles is fundamental for accurately predicting material behavior under various conditions, especially when cohesive forces play a critical role. The Discrete Element Method (DEM) is able to model these interactions based on material as well as contact properties. This paper evaluates the accuracy of DEM in predicting material behavior, for which a cost-effective cohesion model is implemented within an in-house DEM code. Simulations of wooden particles in a shear cell, with and without grease coating, are able to replicate the corresponding experimental results. The addition of the cohesion model results in a negligible increase in computational effort, which is of key importance for its application to larger systems.

Graphical abstract
Keywords
Discrete Element Method (DEM); Cohesion; Wooden particles; Shear cell; Powder flowability
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