Chunguang Li^{1, *}, Cuihua Li², Cong Sun³

CMC-Computers, Materials & Continua, Vol.65, No.3, pp. 2607-2621, 2020, DOI:10.32604/cmc.2020.04662 - 16 September 2020

Abstract In this paper, a novel discretization method in σ-τ space is developed to calculate the upper bound limit loads and failure modes of anisotropic Mohr-Coulomb materials. To achieve this objective, the Mohr-Coulomb yield criterion is linearized in σ-τ space, which allows for upper bound solution of soils whose cohesion and friction coefficient varying with direction. The finite element upper limit analysis formulation using the modified anisotropic yield criterion is then developed. Several examples are given to illustrate the capability and effectiveness of the proposed numerical procedure for computing rigorous upper bounds for anisotropic soils. More >

ZHANG Hong-tao¹, ZHAO Yu-fei², Wang Xiao-chun¹, Liu Ying-hua³

The International Conference on Computational & Experimental Engineering and Sciences, Vol.16, No.2, pp. 49-50, 2011, DOI:10.3970/icces.2011.016.049

Abstract This paper is to study the stability of jointed rock slope using the Goodman joint element and upper bound limit analysis. Assumed the constitutes of rock masses, rock block and joint, obey perfect rigid plasticity and Mohr-Coulomb yield criterion, an upper bound finite element formulation is build to study the stability analysis of jointed rock slope using the Goodman joint element. A nonlinear mathematical programming is formulated with equation constraints and the loading factor of external load or self-weight as the objective function, and a direct iterative algorithm is constructed to solve it. Numerical results More >