Rolling Friction in Loose Media and its Role in Mechanics Problems

7th International Scientific Practical Conference "Innovative Technologies in Engineering"

Klishin, S.V.^1 ; Revuzhenko, A.F.^1 ; Kazantsev, A.A.^2

Institute of Mining, SB of RAS, Krasnii av, 54, Novosibirsk, Russia^1

Yurga Institute OfTechnology, TPU Affiliate, Leningradskaya str. 26, Kemerovo region, Yurga, Russia^2

关键词: Classical problems;    Discrete elements;    Elastic properties;    Kinetic patterns;    Lateral pressures;    Material mechanics;    Medium deformation;    Spherical particle;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/142/1/012132/pdf
DOI  :  10.1088/1757-899X/142/1/012132

来源: IOP

【 摘 要 】

Rolling friction between particles is to be set in problems of granular material mechanics alongside with sliding friction. A classical problem of material passive lateral pressure on the retaining wall is submitted as a case in point. 3D method of discrete elements was employed for numerical analysis. Material is a universe of spherical particles with specified size distribution. Viscose-elastic properties of the material and surface friction are included, when choosing contact forces. Particles' resistance to rolling relative to other particles and to the boundary is set into the model. Kinetic patterns of medium deformations are given. It has been proved that rolling friction can significantly affect magnitude and nature of passive lateral pressure on the retaining wall.