Modelling Dense Granular Flows
In this paper we discuss properties of dense granular °ows and elaborate on some properties of a model which generalises the classical plastic potential model using elements of the double shearing model. It is shown how the model is embedded into a Cosserat continuum model. The proposed model recti¯es the ill-posedness of both the non-associated °ow rule and the double shearing model and may be used for both granular materials and also for metals which possess a micro-structure which is capable of rotation.
D. Harris "Modelling Dense Granular Flows", Materials Science Forum, Vol. 623, pp. 49-59, 2009