Modeling of transient responses in friction of halite

Tetsuo Yamaguchi; Chengrui Chang; Hiroyuki Noda; Yohei Hamada; Gonghui Wang; Chao Huang

Presentation information

[E] Oral

S (Solid Earth Sciences ) » S-CG Complex & General

[S-CG45] Science of slow-to-fast earthquakes

Fri. May 26, 2023 3:30 PM - 5:00 PM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

convener:Aitaro Kato(Earthquake Research Institute, the University of Tokyo), Asuka Yamaguchi(Atomosphere and Ocean Research Institute, The University of Tokyo), Yohei Hamada(Japan Agency for Marine-Earth Science and Technology Kochi Institute for Core Sample Research), Yihe Huang(University of Michigan Ann Arbor), Chairperson:Yohei Hamada(Japan Agency for Marine-Earth Science and Technology Kochi Institute for Core Sample Research), Hiroyuki Noda(Kyoto University, Disaster Prevention Research Institute)

4:00 PM - 4:15 PM

[SCG45-40] Modeling of transient responses in friction of halite

*Tetsuo Yamaguchi¹, Chengrui Chang¹, Hiroyuki Noda², Yohei Hamada³, Gonghui Wang², Chao Huang² (1.Graduate school of Agricultural and Life Sciences, The University of Tokyo, 2. Disaster Prevention Research Institute, Kyoto University, 3.JAMSTEC)

Keywords:friction, wear, transient response, theory, shear localization

When granular particles of halite are sheared, transient frictional response and shear localization behavior are observed. In this study, we developped a simple theoretical model that describes such dynamical behavior. By considering the generation, accumulation, and overflow of wear particles, we succeded in reproducing the constant friction and subsequent slip weakening. We also succeeded in modeling of the normal stress dependence on the characteristic lengths for the two respective regimes. In our presentation, we will explain the outline and validity of our model.