In this paper we analyze the nature of stress distribution experienced by l
arge particles in a dense granular media subjected to slow shearing, using
the distinct element method. The particles were generated in a three-dimens
ional cuboidal periodic cell in which a large solid spherical particle was
submerged ("submerged particle") at the center of a bed of monodispersed sp
herical particles. The granular systems with different size ratio (i.e., th
e ratio of the diameter of submerged particle to that of the surrounding mo
nodispersed particles) were subjected to quasi-static shearing tinder const
ant mean stress condition. The evolution of stress distribution in the subm
erged particle during shearing was carefully tracked down and presented her
e. The nature of stress distribution is bifurcated into two components, viz
., (i) hydrostatic and (it) deviatoric Components. It has been shown that,
for size ratio greater than c.a. 10, the nature of stress distribution in t
he submerged particle is hydrostatically dominant (increases the 'fluidity'
). For smaller size ratios, the nature of stress distribution in the submer
ged particle is dominantly deviatoric.