有限元法
压缩(物理)
流离失所(心理学)
材料科学
挤压
复合材料
纹理(宇宙学)
结构工程
计算机科学
工程类
人工智能
心理学
图像(数学)
心理治疗师
作者
Xiaopeng Liu,Zhentao Cao,Liu Yang,Chen Huan,Yonglin Zhang
出处
期刊:Foods
[MDPI AG]
日期:2022-06-23
卷期号:11 (13): 1851-1851
被引量:9
标识
DOI:10.3390/foods11131851
摘要
Apples are easily damaged during transportation due to extrusion and collision, resulting in structural damage and deterioration. To better understand apples' mechanical-structural damage behavior, a texture analyzer platform combined with in situ observation was established. The effects of extrusion distance, speed, working temperature, and typical kinds of apple were considered for damage mechanisms. Apple damage was analyzed via the finite element method (FEM). The results indicated that the apple extrusion behavior can be divided into elastic interaction and plastic damage. Compression displacement effects were obviously significant in terms of structural damage, and apple samples were in an elastic stage with displacement of less than 2.3 mm, and no structural damage. The peak force energy-displacement mathematical model was established, showing an "s" shape and upward parabolic shape. The critical compression energy was around 100N·mm during elastic interaction. The damaged area was positively correlated with the compression energy. The FEM simulation results were consistent with the damage distribution of apples. The effects of speed on the three apple types were different. Red Fuji apples with a bruised area were not sensitive to pressure speed. The effect on the crack forming of Ralls apples was significant. Golden Delicious apples with a bruised area and crack formation showed an intermediate effect. The peak force-temperature fitting curve showed a downward parabolic shape and an R2 determination factor of 0.99982. Apple squeeze damage mechanisms provide theoretical guidance for apple damage control.
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