Multiscale strength reduction method for heterogeneous slope using hierarchical FEM/DEM modeling. (November 2019)

• Record Type: Journal Article
• Authors: Meng, Q.X.; Wang, H.L.; Xu, W.Y.; Cai, M.; Xu, Jianrong; Zhang, Q.
• Is Part Of: Computers and geotechnics. Volume 115(2019)
• Publication Date: 2019-11
• Subjects: Multiscale strength reduction method -- Hierarchical FEM/DEM modeling -- Slope failure mechanism -- Soil-rock mixture; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2019.103164
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: A novel hierarchical multiscale strength reduction method with a coupled finite element method (FEM) and discrete element method (DEM) approach is proposed for a heterogeneous slope. This approach is implemented and validated by employing a soil and rock mixture (SRM) slope. Compared with conventional strength reduction method, this method avoids the expensive cost of large field tests in parameters estimation and provides a better understanding of the failure mechanism with macroscopic and microscopic results. The multiscale simulation approach, which is directly based on particle-level simulation and bypasses conventional constitutive assumptions, provides a novel numerical tool for slope stability analysis of heterogeneous geomaterials.