Practice on Numerical Methods for Soil Fracture
Soil failure or fracturing has been a hot topic due to the importance in applications and the complex in analyzing the dynamic behaviors. In this paper, three numerical methods, the Finite Element Method (FEM), the Discrete Element Method (DEM) and the Combined Finite-Discrete Element Method (FE/DEM) were involved. In the approach a typical soil uniaxial compression test was simulated with FEM and DEM simultaneously for comparison. Finally FE/DEM was used to simulate soil fracturing under a blade disturbance. The results demonstrated that with FEM the soil failure simply means solid yielding, while soil fracturing with DEM is easy but the soil specimen must be made with a bonding technique for discrete particles. The FE/DEM seems more feasible since it can simulate the whole process from continuum to discontinuum with a set of real fracturing pictures.
solid fracturing discrete element method finite element method combined finite-discrete element method
Yanjie Li Yong Xu
Engineering College,Beijing Forestry University,Beijing,100083 College of Science,China Agricultural University,Beijing,100083
国际会议
北京
英文
335-340
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）