Cone-complementary manifold method for stability and failure analysis of jointed/fractured rock masses. (March 2021)

• Record Type: Journal Article
• Authors: Fan, Huo; Huang, Duruo; Wang, Gang
• Is Part Of: Computers and geotechnics. Volume 131(2021)
• Publication Date: 2021-03
• Subjects: Jointed/fractured rock masses -- Numerical manifold method -- Cone complementary formulation -- Crack propagation -- Progressive failure; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2020.103955
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: Taking advantage of a unique dual-cover system, the numerical manifold method (NMM) is a powerful tool for analyzing stability and progressive failure of jointed/fractured rock masses. In this study, a new implicit cone complementary (CC) formulation is integrated into the NMM to capture the dynamic frictional-cohesive contact problems in jointed/fractured rock masses. The innovative numerical method, termed as the CC-NMM, circumvents numerical difficulties of using artificial contact penalty and open-close iteration in the original NMM. Benchmark examples demonstrate that both mechanical energy and translational momentum of the system are conserved in the proposed CC-NMM. Several examples are further designed to illustrate the excellent performance of the CC-NMM in simulating the progressive failure pattern and stability of the jointed/fractured rock masses.