ABSTRACT
Bonded particle model has gained considerable at-
tention in the rock mechanics field because of its
ability to simulate the strength, non-linear deforma-
tion behaviors of intact rock without using sophisti-
cated constitutive laws. However, Potyondy & Cun-
dall (2004) noted that the use of a circular particle
assembly in the Brazilian test and uniaxial compres-
sion tests results in a very low ratio of compressive
to tensile strength, as well as low friction angle un-
der higher confining pressures.
