Oblique impact breakage unification of nonspherical particles using discrete element method (Open Access)--颗粒学报PARTICUOLOGY

Peng, D., Wang, L., Lin, Y., Zhu, C., Chen, X., Liu, Z., & Ge, R. (2024). Oblique impact breakage unification of nonspherical particles using discrete element method. Particuology, 90, 61-71. https://doi.org/10.1016/j.partic.2023.11.012

Oblique impact breakage unification of nonspherical particles using discrete element method (Open Access)

Di Peng ^{a b c}, LiGe Wang ^{a d}, Yuquan Lin ^{e f}, Chongqiang Zhu ^{e g}, Xizhong Chen ^h, Zhihui Liu ^d *, Ruihuan Ge ^i *

a Shenzhen Research Institute of Shandong University, Shenzhen 518057, China
b Institute of Foundation Engineering, China Academy of Building Research, Beijing 100013, China
c Ubiquitous Particle Ltd., Twickenham, London TW2 7AU, UK
d Department of Smart Manufacturing and Engineering Software, School of Qilu Transportation, Shandong University, Jinan 250061, China
e Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China
f School of Transportation and Civil Engineering, Shandong Jiaotong University, Jinan 250357, China
g School of Science and Engineering, University of Dundee, Dundee DD1 4HN, UK
h Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
i Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK

10.1016/j.partic.2023.11.012

Volume 90, July 2024, Pages 61-71

Received 18 June 2023, Revised 15 October 2023, Accepted 1 November 2023, Available online 25 November 2023, Version of Record 19 December 2023.

E-mail: Zhihui.liu@sdu.edu.cn; ruihuan.ge@gmail.com

Highlights

• Impact breakage of nonspherical particles is investigated by DEM under oblique impact.

• Investigation of impact orientation and tangential velocity on the breakage characteristics.

• Model calibration and validation for equivalent velocity.

• Unified breakage master surfaces for all the particle shapes are constructed.

Abstract

Particle breakage commonly occurs during processing of particulate materials, but a mechanistic model of particle impact breakage is not fully established. This article presents oblique impact breakage characteristics of nonspherical particles using discrete element method (DEM) simulations. Three different particle shapes, i.e. spherical, cuboidal and cylindrical, are investigated. Constituent spheres are agglomerated with bridging bonds to model the breakage characteristics under impact conditions. The effect of agglomerate shapes on the breakage pattern, damage ratio, and fragment size distribution is fully investigated. By using a newly proposed oblique impact model, unified breakage master surfaces are theoretically constructed for all the particle shapes under oblique impact conditions. The developed approach can be applied to modelling particulate processes where nonspherical particles and oblique impact breakage are prevailing.

Graphical abstract

Keywords

Breakage master curve; Nonspherical particle; Oblique impact; Equivalent velocity; Discrete element method (DEM); Bonded contact model

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