[PDF] Top 20 Influence of grain size distribution on critical state of granular materials

... UMR CNRS 6183, Nantes, France christophe.dano@ec-nantes.fr Summary. This paper aims to investigate the influence of grain size distribution (GSD) on the critical state ... Voir le document complet

... behavior of very coarse granular materials has been ...First of all, the authors constructed a constitutive model able to reproduce the main fea- tures of granular ...the ... Voir le document complet

... the grain size distributions, the position of the critical state line and the plastic work is investigated using experimental results on Cambria ...position of the ... Voir le document complet

... fragility of the contact points of small curvature ...the grain size distribution and different studies appear to agree that a badly- graded grain size distribution ... Voir le document complet

... condition, granular materials are known to become unstable even before their stress states reach the failure state (see, for example, [10–15] ...inability of a soil element to sustain a given ... Voir le document complet

... Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 3 Research Institute in Civil and Mechanical Engineering, UMR CNRS 6183, Ecole Centrale de Nantes, 44321 Nantes, France A ... Voir le document complet

... Keywords: Critical state, grain breakage, limestone ...Introduction Grain breakage influences significantly the mechanical behaviour of crushable granular ...the grain ... Voir le document complet

... the size of reproductive structures, without under- investing in the roots, stems, and leaves required for maintaining physiological and structural ...system of modern wheat is large enough to take ... Voir le document complet

... peak state and in the sheared state as a function of ...effect of local adhesion is amplified by nonconvex particle shape to enhance the macroscopic ...values of c ∗ are by one order ... Voir le document complet

... simulation of such processes, an appropriate constitutive model that properly describes material behavior at large strain is ...evolution of the associated ...all grain-size dependent. The ... Voir le document complet

... reconstruction of microstructures by microtomography is based on X-ray radiography (Buffiere et ...rotations of a specimen, and with an appropriate algorithm, 3D images of the sample are obtained at ... Voir le document complet

... function of the cumulative vertical strain ε  = ln(1 + ...erence state. We chose Φ0 = 0.8 which corresponds to the beginning of particle ...increase of stress with ε  is ...change of ... Voir le document complet

... loss of double contacts in the residual state compared to the initial isotropic state for all values of ...proportion of double-simple and triple contacts are nearly the ...isostatic ... Voir le document complet

... sheared granular materials composed of crushable particles by means of contact dynamics simulations and the bonded-cell model for particle ...ratio of the internal cohesion of ... Voir le document complet

... series of specimens were made: non-reactive and ...swelling of about ...difference of available porous volume according to reactive aggregate ... Voir le document complet

... proportion of clay measured by the devices of different manufacturers ...impact of sand particles and the use of ultrasound sonication (US) has not been ...most of these studies used ... Voir le document complet

... temperature of T = ...column of Fig. 3 shows the phase distributions obtained for drying of the mono modal pore network and represents classical invasion percolation patterns [3] with a dry zone ... Voir le document complet

... a granular model which takes into account disordered interfacial phases by considering less stable magnetic grains at the interface in the antiferromagnetic (AF) ...effect of the nanofabrication process by ... Voir le document complet

... the size distribution of the ...The size distribution of the largest bodies is controlled by the accretion process while that of bodies smaller than 50-100 km in diameter ... Voir le document complet

... in granular materials is an increasing trend to under- stand their macro-scale ...scale of the grain during a mechanical ...analysis of the medium where grains are individuated, as for ... Voir le document complet