Study on couple stress and shear band development in granular media based on numerical simulation analyses

By M. Oda, K. Iwashita. 2000

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Modelling and measuring of cohesion in wet granular materials (2003, background): “This makes the application of additional elements such as torsion contact springs [13] unnecessary.”
Buckling force chains in dense granular assemblies: physical and numerical experiments (2009, methodology): “Details of this approach, previously adopted in other DEM simulations (e.g. Iwashita and Oda 2000, Oda and Iwashita 2000, Muthuswamy and Tordesillas 2006), will be discussed later.”
Assessment of rolling resistance models in discrete element simulations (2011, background): “Oda and Iwashita [48] further indicated that the rotational resistance of particles can be one of the dominant components that determine the strength of granular media.”
Cohesive, frictional powders: contact models for tension (2008, methodology): “This can be used to mimick the effects of surface roughness and non-spherical shapes to some extent [59; 58; 57], but naturally, non-spherical particles require more advanced algorithms [31; 52; 89] – not discussed further in this study.”