2015 EJRNL PP Fei Yan 1.pdf?
Terbatas Irwan Sofiyan
» ITB
Terbatas Irwan Sofiyan
» ITB
A continuous-discontinuous cellular automaton method is developed for rock ini-
tiation and propagation simulations, in which the level set method, discontinuous enrichment
shape functions and discontinuous cellular automaton are combined. No remeshing is needed for
crack growth analysis, and all calculations are restricted to cells without an assembled global stiff-
ness matrix. The frictional contact theory is employed to construct the contact model of normal
pressure and tangential shear on crack surfaces. A discontinuous cellular automaton updating
rule suitable for frictional contact of rock is proposed simultaneously with Newton’s iteration
method for nonlinear iteration. Besides, a comprehensive fracturing criterion for brittle rock under
compression-shear loading is developed. The accuracy and effectivenesss of the proposed method
is proved by numerical simulation.