The MFBD-DEM coupling simulation approach for the investigation of granules screening efficiency in 4-DOF Flip-Flow Screen

IF 2.3 3区工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Granular Matter Pub Date : 2023-12-06 DOI:10.1007/s10035-023-01380-5

Chengjun Wang, Qing Liu, Lin Yang

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Abstract

The Flip-Flow Screen is extensively utilized in the vibrating screening process for the treatment of particle matter. In this study, a four-degree-of-freedom (4-DOF) Flip-Flow Screen was proposed. The granules in the 4-DOF Flip-Flow Screen were modeled using the discrete element method. The screening process of the 4-DOF Flip-Flow Screen was simulated by multi-flexible body dynamics-discrete element method (MFBD-DEM) coupling. The impact of vibration frequency and amplitude on the sieving effect of the Flip-Flow Screen was studied. The vibration parameters of the 4-DOF Flip-Flow Screen were optimized using the response surface method to improve sieving performance. Analysis of variance (ANOVA) was employed to assess the simulation findings. The results show that the variables with the greatest influence on the screening efficiency are z-direction frequency and x-direction frequency, respectively. The best outcome corresponding to the maximum screening efficiency is found to occur as the z-direction frequency, x-direction frequency, x-direction amplitude, and y-direction amplitude are all at 7.5 Hz, 15 mm, and 3 mm, respectively.

Graphical abstract

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采用 MFBD-DEM 耦合模拟方法研究 4-DOF 翻转流筛分机的颗粒筛分效率

在处理颗粒物质的振动筛分过程中，翻转流筛网得到了广泛应用。本研究提出了一种四自由度（4-DOF）翻转流筛网。4-DOF Flip-Flow 筛中的颗粒采用离散元法建模。通过多柔性体动力学-离散元法（MFBD-DEM）耦合模拟了 4-DOF 翻转流筛网的筛分过程。研究了振动频率和振幅对翻板流筛分效果的影响。采用响应面法优化了 4-DOF 翻转流筛网的振动参数，以提高筛分性能。采用方差分析（ANOVA）来评估模拟结果。结果表明，对筛分效率影响最大的变量分别是 Z 方向频率和 X 方向频率。当 Z 方向频率、X 方向频率、X 方向振幅和 Y 方向振幅都分别为 7.5 Hz、15 mm 和 3 mm 时，筛分效率最高。

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来源期刊

Granular Matter Materials Science-General Materials Science

CiteScore

4.60

自引率

8.30%

发文量

审稿时长

6 months

期刊介绍： Although many phenomena observed in granular materials are still not yet fully understood, important contributions have been made to further our understanding using modern tools from statistical mechanics, micro-mechanics, and computational science. These modern tools apply to disordered systems, phase transitions, instabilities or intermittent behavior and the performance of discrete particle simulations. >> Until now, however, many of these results were only to be found scattered throughout the literature. Physicists are often unaware of the theories and results published by engineers or other fields - and vice versa. The journal Granular Matter thus serves as an interdisciplinary platform of communication among researchers of various disciplines who are involved in the basic research on granular media. It helps to establish a common language and gather articles under one single roof that up to now have been spread over many journals in a variety of fields. Notwithstanding, highly applied or technical work is beyond the scope of this journal.