Effect of vibrational frequency on alfalfa opening compression process

Du, Haijun; Ma, Yanhua; Li, Ruoyan; Lei, Ting; Wu, Pei

doi:10.15376/biores.17.4.6706-6717

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…With the increase in compressive force, the lower will be the porosity of the molding block, and the higher will be the stability of the molding block (Siyal et al 2023). However, the high density requires higher energy consumption, which is not in line with the economic benefit demand (Du et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Effect of process parameters on quality of alfalfa block

Du,

Lei,

et al. 2024

BioRes

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To address the imbalance in the supply of grass resources caused by seasonality and regional factors, it is crucial to efficiently store and transport alfalfa. Exploring suitable grass feed processing techniques contributes to the stable transportation of grass blocks and long-term storage of nutritional components. The Central Composite Design response surface design was used to design experiments, with moisture content and compressive force as the test factors. Based on the experimental results, it was found that lower moisture content and a certain compressive force were beneficial for the stability, high density, and protein storage of alfalfa blocks. The microscopic examination of alfalfa particles revealed that a certain moisture content (15%) facilitates the formation of solid bridges between particles, leading to more stable alfalfa blocks. The final optimized process parameters were moisture content of 14.3% and compressive force of 34.8 kN. Under these conditions, the density of the molded alfalfa block was 1001 kg/m3, with R-CP at 96.96%, R-EE at 67.23%, and R-CF at 114.13%.

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Section: Introductionmentioning

confidence: 99%

Effect of process parameters on quality of alfalfa block

Du,

Lei,

et al. 2024

BioRes

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Research and Prediction of Wear Characteristics of Alfalfa Densification Die Based on the Discrete Element Method

Du,

et al. 2024

Agriculture

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In this study, the wear characteristics of the die were tested and analyzed through compaction tests, and the distribution of wear depth along the direction toward the extrusion outlet was obtained. A discrete element method (DEM) model of the die’s wear process was established. The results show that the severe wear area is located near the stop position of the compression rod, forming a plow-shaped wear area along the extrusion direction, accompanied by fatigue peeling. The wear depth gradually decreases towards the extrusion outlet. The DEM model partially reveals the occurrence of the wear phenomenon, but the particle motion speed deviates from the actual situation. The maximum compression force value range during the DEM compression stage is within the actual maximum compression force value range, and the relative error range of the average maximum compression force is less than 2%. By verifying the formula to calibrate the model, the calibrated model is compared with the actual mold wear, and the predicted value is close to the actual test result. The DEM can be used to explore the wear mechanism and predict the die’s wear failure process, laying the foundation for optimizing die wear resistance design.

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Effect of vibrational frequency on alfalfa opening compression process

Cited by 2 publications

References 10 publications

Effect of process parameters on quality of alfalfa block

Effect of process parameters on quality of alfalfa block

Research and Prediction of Wear Characteristics of Alfalfa Densification Die Based on the Discrete Element Method

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