Discrete element modelling of large soil deformations under heavy vehicles |
| |
| Institution: | 1. Umeå University, SE-90187 Umeå, Sweden;2. Swedish University of Agricultural Sciences, SE-90183 Umeå, Sweden;1. Department of Automotive, Mechanical and Manufacturing Engineering, University of Ontario Institute of Technology, ON L1H 7K4, Canada;2. Volvo Group Trucks Technology, Vehicle Analysis, Dept. BF72920, Göteborg AB4S 405 08, Sweden;1. Advanced Science and Automation Corp., Indianapolis, IN, United States;2. US Army CCDC GVSC, Warren, MI, United States;1. Department of Automotive, Mechanical and Manufacturing Engineering, University of Ontario Institute of Technology, ON L1H 7K4, Canada;2. Volvo Group Trucks Technology, Vehicle Analysis Dept. BF72920, Göteborg AB4S 405 08, Sweden;1. Terramechanics, Multibody, and Vehicle Systems (TMVS) Laboratory, Department of Mechanical Engineering, Virginia Tech, Blacksburg, VA 24061, United States;2. U. S. Army Engineer Research and Development Center, Vicksburg, MS 39180-6199, United States |
| |
| Abstract: | This paper addresses the challenges of creating realistic models of soil for simulations of heavy vehicles on weak terrain. We modelled dense soils using the discrete element method with variable parameters for surface friction, normal cohesion, and rolling resistance. To find out what type of soils can be represented, we measured the internal friction and bulk cohesion of over 100 different virtual samples. To test the model, we simulated rut formation from a heavy vehicle with different loads and soil strengths. We conclude that the relevant space of dense frictional and frictional-cohesive soils can be represented and that the model is applicable for simulation of large deformations induced by heavy vehicles on weak terrain. |
| |
| Keywords: | DEM Multibody dynamics Weak soil Rut formation Multipass |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
