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| Numerical simulation of mixing uniformity of sand and gravel in rotating drum |
| Received:August 25, 2018 Revised:December 14, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20180825001 |
| KeyWord:rotating drum mixing uniformity orthogonal experimental design discrete element method |
| Author | Institution |
| 姜胜强 |
湘潭大学 机械工程学院, 湘潭 ;复杂轨迹加工工艺及装备教育部工程研究中心, 湘潭 |
| 叶一璇 |
湘潭大学 机械工程学院, 湘潭 ;复杂轨迹加工工艺及装备教育部工程研究中心, 湘潭 |
| 阳恩勇 |
湘潭大学 机械工程学院, 湘潭 ;复杂轨迹加工工艺及装备教育部工程研究中心, 湘潭 |
| 刘思思 |
湘潭大学 机械工程学院, 湘潭 ;复杂轨迹加工工艺及装备教育部工程研究中心, 湘潭 |
| 刘金刚 |
湘潭大学 机械工程学院, 湘潭 ;复杂轨迹加工工艺及装备教育部工程研究中心, 湘潭 |
| 谭援强 |
华侨大学 制造工程研究院, 厦门 |
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| Abstract: |
| The discrete element method (DEM) is used to numerically simulate the mixing uniformity of sand and gravel materials in rotating drums.The rotational speed of the drum,the diameter of the rotating drum,the number of lifters in the rotating drum and the filling rate of gravels were selected as the influencing factors,and three levels were established to carry out orthogonal experimental research on material mixing in the rotary drum,aiming at analyzing the degree of sensitivity of each factor.The material mixing time and the particle contact rate were selected as test indicators,and four factors were subjected to range analysis and variance analysis.The results show that the rotational speed of drum,the diameter of the rotating drum and the filling rate of gravel have a significant influence on the mixing time of the material,and the effect of the number of lifters in the rotating drum on the mixing time is not significant.And the influence of the filling rate of gravels,the rotational speed of the drum and the number of the lifters in the rotating drum on the particle contact rate after mixing is significant,and the diameter of the rotating drum has no significant effect on the particle contact rate after mixing. |
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