Simulation of rice grain breakage process based on Tavares UFRJ model

IF 4.1 2区材料科学 Q2 ENGINEERING, CHEMICAL Particuology Pub Date : 2024-06-18 DOI:10.1016/j.partic.2024.05.019

Shaohang Shen , Shouyu Ji , Dan Zhao , Yanlong Han , Hao Li , Ze Sun , Zhuozhuang Li , Anqi Li , Wenyu Feng , Jiaming Fei , Fuguo Jia , Yang Li

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Abstract

Understanding the breakage characteristics of rice grains is an important means to reduce rice breakage rate. However, the dynamic breakage mechanism of rice grain is unclear due to the lack of a reasonable breakage model. In this study, the uniaxial compression test and drop weight test of single rice were carried out, the breakage model of rice grain was constructed, the reliability of rice model was verified by the experiment and simulation results. The results showed that the fracture energy distribution of rice can be obtained by uniaxial compression test, the specific fracture energy of rice accords with a lognormal distribution, and the median specific fracture energy of rice is 479.75 J/kg. The damage accumulation coefficient and fragment size distribution of rice can be acquired by drop test, the result of damage accumulation coefficient of rice was 4.3. Rice grain breakage mainly occurs in the milling section of the vertical circulation rice mill.

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基于塔瓦雷斯 UFRJ 模型的稻谷破碎过程模拟

了解米粒的破损特性是降低米粒破损率的重要手段。然而，由于缺乏合理的破损模型，米粒的动态破损机理尚不清楚。本研究对单粒大米进行了单轴压缩试验和落重试验，构建了米粒的破损模型，并通过试验和模拟结果验证了米粒模型的可靠性。结果表明，通过单轴压缩试验可以得到稻谷的断裂能分布，稻谷的比断裂能符合对数正态分布，稻谷比断裂能的中位数为 479.75 J/kg。大米的损伤累积系数和碎片大小分布可通过跌落试验获得，大米的损伤累积系数结果为 4.3。米粒破碎主要发生在立式循环碾米机的碾米段。

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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.