TY - GEN
T1 - Constitutive Relations from Particle Simulations
AU - Luding, Stefan
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Particulate systems like powders, soil or granular matter are discrete, disordered systems displaying dynamic and static, fluid - and solid-like states. The transients between fluid - and solid-like behavior can be intermittent and sometimes both states coexist in steady-state. Bridging the gap between the particulate, microscopic picture (velocities, forces) on the particle scale and their continuum description (strain and stress) via a so-called micro-macro transition is the goal of this paper. The generalized local constitutive relation for the stress in critical state granular flows involves not only density and strain rate but also the jamming-density and the granular temperature.
AB - Particulate systems like powders, soil or granular matter are discrete, disordered systems displaying dynamic and static, fluid - and solid-like states. The transients between fluid - and solid-like behavior can be intermittent and sometimes both states coexist in steady-state. Bridging the gap between the particulate, microscopic picture (velocities, forces) on the particle scale and their continuum description (strain and stress) via a so-called micro-macro transition is the goal of this paper. The generalized local constitutive relation for the stress in critical state granular flows involves not only density and strain rate but also the jamming-density and the granular temperature.
KW - Continuum rheology
KW - Micro-macro transition
KW - Particle models
UR - http://www.scopus.com/inward/record.url?scp=85065791305&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-14987-1_10
DO - 10.1007/978-3-030-14987-1_10
M3 - Conference contribution
AN - SCOPUS:85065791305
SN - 9783030149864
T3 - Springer Series in Geomechanics and Geoengineering
SP - 86
EP - 92
BT - Desiderata Geotechnica
A2 - Wu, Wei
PB - Springer
T2 - China-Europe Conference on Geotechnical Engineering, 2018
Y2 - 13 August 2018 through 16 August 2018
ER -