2024/10/27 by Fumiaki Nakai, Takashi Uneyama, Nakai, Fumiaki +6
Engineering · #Drilling and Well Engineering #FOS: Physical sciences #Hydraulic Fracturing and Reservoir Analysis #Materials Science (cond-mat.mtrl-sci) #Rock Mechanics and Modeling #Soft Condensed Matter (cond-mat.soft)
paper · pdf · doi:10.48550/arxiv.2410.20308
openalex publication_date 2024/10/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Atomic crystals with dislocations deform plastically at low stresses via dislocation glide. Whether dislocation glide occurs in macroscopic frictional granular media has remained unknown. The discrete element method is employed to simulate the structural and mechanical responses of a granular crystal with an edge dislocation. We find that dislocation glide occurs at low interparticle friction, resulting in significantly lower yield stresses than in dislocation-free crystals. Yield stress varies linearly with interparticle friction, attributed to both Peierls stress and frictional effect.