Microscopic origin of granular ratcheting.
Phys Rev E Stat Nonlin Soft Matter Phys
; 77(3 Pt 1): 031304, 2008 Mar.
Article
em En
| MEDLINE
| ID: mdl-18517367
ABSTRACT
Numerical simulations of assemblies of grains under cyclic loading exhibit "granular ratcheting" a small net deformation occurs with each cycle, leading to a linear accumulation of deformation with cycle number. We show that this is due to a curious property of the most frequently used models of the particle-particle interaction namely, that the potential energy stored in contacts is path dependent. There exist closed paths that change the stored energy, even if the particles remain in contact and do not slide. An alternative method for calculating the tangential force removes granular ratcheting.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev E Stat Nonlin Soft Matter Phys
Assunto da revista:
BIOFISICA
/
FISIOLOGIA
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Alemanha