Prediction method for maize kernel impact breakage based on high-speed camera and FEM

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL Powder Technology Pub Date : 2024-06-13 DOI:10.1016/j.powtec.2024.120002

Han Tang , Guixuan Zhu , Ziheng Wang , Wenlong Xu , Changsu Xu , Jinwu Wang

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Abstract

Processes such as threshing and processing determine the subsequent storage, nutritional value, and economic value of maize kernels. The breakage characteristics of maize kernels in threshing and processing machinery are unknown, which greatly limits the need for new developments in low-loss threshing. In this paper, the breakage characteristics of maize kernels under different impact postures and impact velocities were investigated by a combination of FEM and bench tests. The results showed that the breakage evolution rules of kernel breakage modes were the result of stress concentration and energy conversion. The maize kernel with side posture had the smallest critical breakage velocity of 22.5 m/s for breaking into pieces. A breakage probability model for predicting the degree of maize kernel breakage was proposed, and the energy and velocity thresholds provided a method for the digital design of breakage reduction performance of maize threshing machinery and detection performance of impact breakage machinery.

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基于高速摄像和有限元分析的玉米芯冲击破损预测方法

脱粒和加工等过程决定了玉米粒的后续储存、营养价值和经济价值。玉米粒在脱粒和加工机械中的破碎特性尚不清楚，这极大地限制了低损耗脱粒的新发展需求。本文采用有限元分析和台架试验相结合的方法，研究了玉米粒在不同冲击姿态和冲击速度下的破碎特性。结果表明，玉米粒破损模式的破损演变规律是应力集中和能量转换的结果。具有侧向姿态的玉米粒破碎成碎片的临界破碎速度最小，为 22.5 米/秒。提出了预测玉米籽粒破损程度的破损概率模型，其能量阈值和速度阈值为数字化设计玉米脱粒机械的破损降低性能和冲击破损机械的检测性能提供了方法。

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.