A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Discrete Element Methods with Special Focus on DEM
In this chapter, the dynamic relaxation algorithm of “distinct element method (DEM)” belonging to the family of particle-or block-based CMs, is elucidated towards the simulation of rock mass as a particle assemblage with large deformation. A distinct element represents the particle or block discretized naturally (e.g. aggregate grain, rock-fill due to crushing/blasting process, and rock block due to joint intersection) or artificially (e.g. equivalently simulated landslide body). The interaction between particles or blocks is captured by compliant contact models that accommodate virtual ‘‘inter-penetrations” to get normal and tangential contact forces related to postulated stiffness coefficients. These contact forces are in turn, applied to solve the problem iteratively. In addition, a viscous damping parameter may be introduced to reduce dynamic effects for the simulation of quasi-static states.
Discrete Element Methods with Special Focus on DEM
In this chapter, the dynamic relaxation algorithm of “distinct element method (DEM)” belonging to the family of particle-or block-based CMs, is elucidated towards the simulation of rock mass as a particle assemblage with large deformation. A distinct element represents the particle or block discretized naturally (e.g. aggregate grain, rock-fill due to crushing/blasting process, and rock block due to joint intersection) or artificially (e.g. equivalently simulated landslide body). The interaction between particles or blocks is captured by compliant contact models that accommodate virtual ‘‘inter-penetrations” to get normal and tangential contact forces related to postulated stiffness coefficients. These contact forces are in turn, applied to solve the problem iteratively. In addition, a viscous damping parameter may be introduced to reduce dynamic effects for the simulation of quasi-static states.
Discrete Element Methods with Special Focus on DEM
Springer Tracts in Civil Engineering
Chen, Shenghong (author)
2023-01-01
73 pages
Article/Chapter (Book)
Electronic Resource
English
Discrete Element Methods with Special Focus on DDA
| Springer Verlag | 2023
General Finite Element Methods with Special Focus on NMM
| Springer Verlag | 2023
General Finite Element Methods with Special Focus on XFEM
| Springer Verlag | 2023
Mesh-Free Methods with Special Focus on SPH
| Springer Verlag | 2023
Mesh-Free Methods with Special Focus on EFGM
| Springer Verlag | 2023