کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
514794 | 866820 | 2008 | 13 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Comparison of the macroscopic behavior of granular materials modeled by different constitutive equations on the microscale Comparison of the macroscopic behavior of granular materials modeled by different constitutive equations on the microscale](/preview/png/514794.png)
In this paper a three-dimensional discrete element method (DEM) is used to model cohesionless granular materials. Two different microscopic constitutive equations are used to resolve the contacts between single particles in the DEM: First, a simple penalty type contact law and second, a more sophisticated Hertzian type contact law. Numerical tests in form of DEM simulations of a cuboid particle sample under compression and shearing are performed using both microscopic constitutive equations. The microscopic results of the DEM in terms of inter-particle contact forces and particle trajectories are transferred to macroscopic results in terms of stresses and strains by a homogenization approach. The macroscopic results are presented and compared for the different microscopic constitutive equations.
Journal: Finite Elements in Analysis and Design - Volume 44, Issue 5, March 2008, Pages 259–271