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Study on the reduction of soil adhesion and tillage force of bionic cutter teeth in secondary soil crushing

文献类型： 外文期刊

作者： Guan, Chunsong 1 ; Fu, Jingjing 2 ; Xu, Lei 3 ; Jiang, Xizhi 3 ; Wang, Shulin 1 ; Cui, Zhichao 2 ;

作者机构： 1.Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Jiangsu, Peoples R China

2.Minist Agr & Rural Affairs, Nanjing Inst Agr Mechanizat, Nanjing 210014, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, Nanjing 210014, Peoples R China

关键词： Bionic; Cutter teeth; Coating; Soil adhesion; Tillage force

期刊名称：BIOSYSTEMS ENGINEERING （ 影响因子：5.002； 五年影响因子：5.321 ）

ISSN： 1537-5110

年卷期： 2022 年 213 卷

页码：

收录情况： SCI

摘要： Fine breakage of topsoil blocks in a seedbed has an important impact on operation quality of planting and harvesting mechanisation. Structure and material of the cutter teeth are one of the key elements in fine topsoil breaking. In order to improve the tillage performance of crushing cutter teeth, a bionic cutter teeth prototype inspired by the badger claw toe is proposed. In addition, the surface of the cutter teeth was modified by anti-adhesion material coating. The simulation model was established in ANSYS/LS-DYNA software and simulated soil cutting process was analysed. The results showed that cutter teeth with bionic structure could effectively reduce the average cutting resistance, cutting stress, soil energy, and maximum cutting resistance, obtaining soil cutting effect. By employing Fourier transform infrared spectroscopy (FTIR), water contact angle combined with abrasion resistance tests, mixed polytetrafluoroethylene (PTFE) and fluorosilicone acrylic acid (FAA) resin coatings after sintering were found to combine well with the cutter teeth. When the coating thickness was 10 mm, the tillage force was the lowest, and the abrasion resistance was the highest, which resulted in best comprehensive performance of cutter teeth. Scanning electron microscope (SEM) images indicated that the coating material can protect the surface and prevent abrasion. Field test results also proved that uncoated and coated bionic cutter teeth had lower energy consumption and soil adhesion, especially for the coated bionic cutter with 10 mm thickness. The results of this study could provide an important reference for designing a more efficient rotating tillage tools.(c) 2021 IAgrE. Published by Elsevier Ltd. All rights reserved.

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