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

被引:1
作者
Du, Haijun [1 ]
Du, Hailong [2 ]
Ma, Yanhua [1 ,3 ]
Su, He [1 ]
Xuan, Chuanzong [1 ]
Xue, Jing [1 ]
机构
[1] Inner Mongolia Agr Univ, Coll Mech & Elect Engn, 36 Zhaowuda Rd, Hohhot 010018, Peoples R China
[2] Southwestern Inst Phys, Chengdu 610041, Peoples R China
[3] Inner Mongolia Engn Res Ctr Intelligent Equipment, Hohhot 010018, Peoples R China
来源
AGRICULTURE-BASEL | 2024年 / 14卷 / 08期
基金
中国国家自然科学基金;
关键词
densification die; wear mechanisms; DEM model; PARAMETERS; MODEL;
D O I
10.3390/agriculture14081260
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
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.
引用
收藏
页数:18
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