Speaker
Michio Otsuki
(Shimane University)
Description
We numerically investigate the shear modulus of jammed amorphous solids composed of cohesive grains. While repulsive grains exhibit critical scaling of the shear modulus as a function of the pressure or the excess coordination number, cohesive grains show pronounced hysteresis, which obscures the scaling behavior observed in repulsive systems. We relate this deviation to a possible breakdown of marginal stability, a condition believed to govern the mechanical properties of jammed packings of repulsive grains.
This study has been conducted in collaboration with Kiwamu Yoshii (Tokyo University of Science) and Hideyuki Mizuno (The University of Tokyo).
