Performance of elastic ball screen-cleaning device based on DEM-MBD coupling simulation

IF 4.1 2区材料科学 Q2 ENGINEERING, CHEMICAL Particuology Pub Date : 2024-07-11 DOI:10.1016/j.partic.2024.07.003

Yubin Bi , Qingbin Song , Jingyu Zhu , Jintao Feng , Jianxin Dong , Pengfei Zhao , Yuxiang Huang , Zuoli Fu , Jixing Zhou

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Abstract

In seed breeding, the vibrating screen used for pre-sowing grading parental seeds often has the problem of poor self-purification rate. Using elastic balls to clean the plugging seeds and ensure the self-purification of the screen is a viable technical solution. To clarify and improve the operating performance of the elastic ball particles, a DEM-MBD coupling simulation model of the elastic ball screen-cleaning device was established in this study, and a numerical simulation analysis of the complex motion process was carried out. The mechanism of action of the elastic ball was explained more completely from the aspects of excitation force and energy transfer. Through the Plackett-Burman test, it was determined that the vibration frequency has the most significant effect on the excitation force. Multiple linear regression analysis was performed on each factor and the mathematical relationship equation. It was found that when the maximum excitation force was greater than 7 N and the average excitation force was greater than 2 N, the self-purification rate was greater than 95%. The self-purification rate was then increased to 99.81% by variable frequency tests. The variable frequency achieved better self-purification effect.

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基于 DEM-MBD 耦合模拟的弹性球筛清洁装置的性能

在育种中，用于播前分级亲本种子的振动筛往往存在自净能力差的问题。使用弹性球来清理堵塞的种子，确保筛网的自净能力，是一种可行的技术解决方案。为明确和完善弹性球颗粒的运行性能，本研究建立了弹性球筛分清理装置的 DEM-MBD 耦合仿真模型，并对复杂的运动过程进行了数值仿真分析。从激振力和能量传递两个方面较为完整地解释了弹性球的作用机理。通过 Plackett-Burman 试验，确定了振动频率对激振力的影响最为显著。对各因素和数学关系式进行了多元线性回归分析。结果发现，当最大激振力大于 7 N，平均激振力大于 2 N 时，自净化率大于 95%。通过变频试验，自净率提高到了 99.81%。变频取得了更好的自净效果。

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来源期刊

Particuology 工程技术-材料科学：综合

CiteScore

6.70

自引率

2.90%

发文量

1730

审稿时长

32 days

期刊介绍： The word ‘particuology’ was coined to parallel the discipline for the science and technology of particles. Particuology is an interdisciplinary journal that publishes frontier research articles and critical reviews on the discovery, formulation and engineering of particulate materials, processes and systems. It especially welcomes contributions utilising advanced theoretical, modelling and measurement methods to enable the discovery and creation of new particulate materials, and the manufacturing of functional particulate-based products, such as sensors. Papers are handled by Thematic Editors who oversee contributions from specific subject fields. These fields are classified into: Particle Synthesis and Modification; Particle Characterization and Measurement; Granular Systems and Bulk Solids Technology; Fluidization and Particle-Fluid Systems; Aerosols; and Applications of Particle Technology. Key topics concerning the creation and processing of particulates include: -Modelling and simulation of particle formation, collective behaviour of particles and systems for particle production over a broad spectrum of length scales -Mining of experimental data for particle synthesis and surface properties to facilitate the creation of new materials and processes -Particle design and preparation including controlled response and sensing functionalities in formation, delivery systems and biological systems, etc. -Experimental and computational methods for visualization and analysis of particulate system. These topics are broadly relevant to the production of materials, pharmaceuticals and food, and to the conversion of energy resources to fuels and protection of the environment.