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| Study of discrete element model for non-sphere particles base on super-quadrics |
| Received:November 02, 2012 Revised:April 09, 2013 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201306017 |
| KeyWord:discrete element method non-sphere super-quadrics numerical simulation |
| Author | Institution |
| 崔泽群 |
浙江大学 化学工程与生物工程学系 化工过程机械研究所, 杭州 |
| 陈友川 |
浙江大学 化学工程与生物工程学系 化工过程机械研究所, 杭州 ;中国科学院 煤炭化学研究所, 太原 |
| 赵永志 |
浙江大学 化学工程与生物工程学系 化工过程机械研究所, 杭州 |
| 花争立 |
浙江大学 化学工程与生物工程学系 化工过程机械研究所, 杭州 |
| 刘骁 |
浙江大学 化学工程与生物工程学系 化工过程机械研究所, 杭州 |
| 周池楼 |
浙江大学 化学工程与生物工程学系 化工过程机械研究所, 杭州 |
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| Abstract: |
| A dry contact model of discrete element method has been established which is based on superquadrics by the kinematics and dynamics analysis from the contact process of dry particle system.The model made the mathematic description of the relationship of force and deformation between particles closer to the reality of the movement of particle system.The limitation coming from using spherical-contact model has been avoided to describe the contact of particles so that it made the contacting discrete element model closer to physical reality and a numerical method has been proposed to calculate the model to achieve the simulation of dry particle system with complex particle shape.A program is developed which contains the proposed contacting discrete element model.The feasibility and correctness of the model established in the paper had been proved by testing the validity of the model and the algorithms.As a new numerical calculation method to study particle system,the model described in the paper can simulate the real motion of complex particle system accurately. |