2012/07/16 by Ido Regev, C. Reichhardt, Charles Reichhardt
Engineering · Environmental Science · Materials Science · Mathematics · Physics and Astronomy · #Adiabatic shear band #Composite material #Computer science #Critical resolved shear stress #Drop (telecommunication) #Geometry #Granular flow and fluidized beds #Landslides and related hazards #Material Dynamics and Properties #Materials science #Mathematics #Mechanics #Perpendicular #Physics #Pure shear #Rheology #Shear (geology) #Shear band #Shear rate #Shear stress #Simple shear #cond-mat.soft
paper · pdf · doi:10.1103/physreve.87.020201
arxiv created 2012/07/16 · openalex publication_date 2013/02/22 · arxiv updated 2015/06/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Using numerical simulations we consider an amorphous particle mixture which exhibits shear localization, and find that the addition of even a small fraction of chains strongly enhances the material strength, creating pronounced overshoot features in the stress-strain curves. The strengthening occurs in the case where the chains are initially perpendicular to the shear direction, leading to a suppression of the shear band. This also leads to stiffening effects that are typical of polymeric systems. For large strain, the chains migrate to the region where a shear band forms, resulting in a stress drop. For chains larger than the linear system size we find oscillatory behavior, which does not resemble polymeric systems since the second stress peak is larger than the first. Our results are also useful for providing insights into methods of controlling and strengthening granular materials against failure.