Dissemination of Weak Waves in Granular Materials Under Short-Term Impulse Loads

International Scientific and Practical Conference on Urgent Problems of Modern Mechanical Engineering

机械制造;材料科学

Bobriakov, A.P.^1 ; Kosykh, V.P.^1 ; Revuzhenko, A.F.^1 ; Kazantsev, A.A.^2 ; Ivushkina, N.V.^2

Institute of Mining of Siberian Branch, Russian Academy of Sciences, Red avenue, 54, Novosibirsk, Russia^1

Yugra Technological Institute Branch of Tomsk Polytechnic University, Leningradskaya str. 26, Kemerovo region Yurga, Russia^2

关键词: Channel conductivity;    Conductive channels;    High silicas;    Impulse load;    Multiple-point impact;    Particle packings;    Quasi-static;    Waveguide properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/127/1/012011/pdf
DOI  :  10.1088/1757-899X/127/1/012011

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The results of experiments with dry high-silica sand are presented. Multiple point impacts have been revealed to improve waveguide properties of the material because a conductive channel, containing force "chains", is formed there. Quasistatic alternating shears condition the change in the particle packing; destroy "chains", and deteriorate the channel conductivity. Further multiple impulse loads lead to restoration of the "chains" and conductivity of the channel.