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| Three-equation linear spring-dashpot DEM model and the determination of contact parameters |
| Received:March 14, 2007 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20092016 |
| KeyWord:discrete element method computational granular dynamics heap formation numerical simulation |
| Author | Institution |
| 赵永志 |
浙江大学 化学工程与生物工程学系,杭州 |
| 程易 |
清华大学 化学工程系,北京 |
| 郑津洋 |
浙江大学 化学工程与生物工程学系,杭州 |
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| Abstract: |
| The three-equation linear spring-dashpot model for granular dynamics is a relatively complete discrete element method (DEM), which takes full account of the particle-particle interactions, i.e. the normal contact force, the tangential contact force (including static sliding friction force and sliding friction force) and the moment (including the moment generated by the tangential force, static rolling friction force and rolling friction force). This paper applied the three-equation linear spring-dashpot model to the three-dimensional simulations of granular dynamics in some physical systems. The significance of the choice of contact parameters such as the contact stiffness, the damping coefficient, and the friction coefficient was discussed in detail. Experimental results were employed to validate the model predictions, especially the influence of the simulation parameters. |
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