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| Study on Compaction Characteristics of Particle Based on Discrete Element Method |
| CHEN Chao-yun,WEN Hui-qing,LIANG Yan-zheng |
| Shanghai Institute of Measurement and Testing Technology, Shanghai 201203, China |
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Abstract In order to solve the particle pressure of the particle pressure, the relationship between the physical characteristics and dynamic response of the particles and the lack of mathematical models are characterized by mechanical behavior. For the relationship between the physical properties and dynamic response of particles during compaction and densification, there is a lack of mathematical models to characterize the mechanical behavior. Based on the discrete element method (DEM), two models of vibration and rotation are established to describe the density mechanism of particle pressure. In order to facilitate the analysis of the changes in the process of particles and the filling effect, the actual size of the particles is magnified, and the vibration and transmission rotation experiments of the dice in the cylindrical describer are designed to explore the dynamic characteristics of the compact particles. The research results show that: with the amplitude of 15mm and the frequency of vibration is 1~5Hz, the particles will stay in the semi orderly arrangement state for a long time. Only when the amplitude is reduced to 10mm at a slow time, and the frequency to 3Hz, the complete orderly arrangement state can be achieved. When the acceleration of the transmission rotation is greater than 0.5g, the particles can reach an orderly arrangement state without intervention.
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Received: 09 February 2022
Published: 25 June 2023
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2023, Vol. 44 
