2D cyclic pure shear of granular materials, simulations and model

Krijgsman, D.; Luding, S.
June 2013
AIP Conference Proceedings;Jun2013, Vol. 1542 Issue 1, p1226
Academic Journal
Discrete particle simulations of granular materials under 2D, isochoric, cyclic pure shear have been performed and are compared to a recently developed constitutive model involving a deviatoric yield stress, dilatant stresses and structural anisotropy. The original model shows the cyclic response qualitatively, but suffers from an artificial drift in pressure. With a small modification in the definition of the stress anisotropy and an additional limit-pressure term in the evolution equation for the pressure, it is able to show the transient as well as the limit cycles. The overall goal - beyond the scope of the present study - is to develop a local constitutive model that is able to predict real life, large scale granular systems.


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