A boundary-spheropolygon element method for modelling sub-particle stress and particle breakage. (September 2019)

• Record Type: Journal Article
• Authors: Jiang, Yupeng; Herrmann, Hans J.; Alonso-Marroquin, Fernando
• Is Part Of: Computers and geotechnics. Volume 113(2019)
• Publication Date: 2019-09
• Subjects: Boundary-Spheropolygon element method -- Particle stress state -- Particle breakage -- Numerical simulation; Engineering geology -- Data processing -- Periodicals; Soil mechanics -- Data processing -- Periodicals; Rock mechanics -- Data processing -- Periodicals; 624.1510285
• DOI: 10.1016/j.compgeo.2019.05.002
• Languages: English
• ISSNs: 0266-352X

Abstract

Abstract: We present a boundary-spheropolygon element method that combines the boundary element method (BEM) and the spheropolygon-based discrete element method (SDEM). The interaction between particles is simulated via the SDEM, and the sub-particle stress is calculated by BEM. The framework of BSEM is presented. Then, the accuracy and efficiency of the method are analysed by comparison with both analytical solutions and a well-established finite element method. The results demonstrate that BSEM can efficiently provide instant sub-particle stress for particles with an optimized compromise between computational time and accuracy, thus overcoming most of the disadvantages of existing numerical methods.