Analysis of damage caused by drop impacts for mulberry fruits: An dropping experiment and numerical simulation

作者：Junming Hou, Ziang Zhu, Weixue Hu, Zhenhu He, Qijie Sun, Xiang Yue · 发表于：Journal of Food Process Engineering · 年份：2023 · DOI：10.1111/jfpe.14316 · 被引用次数：12 · 研究领域：Plant Surface Properties and Treatments、Plant responses to water stress、Tree Root and Stability Studies

Abstract In the process of mechanized production of mulberry, falling collision damage is one of the main damage forms, which causes serious damage and accelerates fruit decay. Through the drop collision test and simulation analysis of mulberry fruit, the relationship between drop conditions and fruit damage degree was established, so as to provide reference for reducing fruit falling damage. The drop test is carried out. The relationship between factors and indicators is established. The drop height, fruit plate angle, fruit plate material, and drop direction were taken as factors, and then the energy loss was selected as indicator. The drop process of mulberry fruit is analyzed by numerical simulation, and the maximum stress and deformation of mulberry fruit are analyzed. With the increase of the drop height, the kinetic energy of the fruit increases. When the fruit plate material is pearl cotton, the drop height changes from 200 to 1000 mm, the energy loss of fruit falling increases from 4.42 × 10 −0.3 J to 2.14 × 10 −0.2 J. When the drop height of fruit is 200 mm, the angle of fruit plate is 30°, and the material of fruit plate is pearl cotton, the minimum energy loss of fruit is 3.39 × 10 −0.3 J, the fruit damage was the least. This study can provide a reference to reduce the damage of mulberry fruit in the process of mechanical harvest and transportation. Practical Applications The existing mulberry harvesting methods are manual harvesting, while the vibration harvestin...