Numerical investigation of impact of non-spherical particles with spin and multi-point contact
Lei Li 2
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Department of Engineering Mechanics, Henan University of Science and Technology, Luoyang, China
School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University, Xi’an, China
Submission date: 2020-10-12
Final revision date: 2021-04-22
Acceptance date: 2021-06-09
Online publication date: 2021-06-14
Publication date: 2021-07-25
Corresponding author
Kuahai Yu   

Department of Engineering Mechanics, Henan University of Science and Technology, Luoyang, China
Journal of Theoretical and Applied Mechanics 2021;59(3):431-441
This paper investigates the dynamic behavior of elastoplastic collision of several non-sphere particles through the spherical element combination method. The particles are cylinder, triangle and square particles, which are combined by 2, 3 and 4 spheres using the spherical element method, respectively. Results reveal that the collision of the evaluated irregular particles exhibits three contact styles, which are single point contact, instantaneous multi-point contact and sequential multi-point contact. Normal contact torque and frictional torque act together on the spin of a particle and causes sequential multi-point contact under certain conditions for square particles.
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