Interaction Mechanisms between Blades and Maize Root–Soil Composites as Affected by Key Factors: An Experimental Analysis

Xuanting Liu, Peng Gao, Hongyan Qi, Qifeng Zhang, Mingzhuo Guo and Yunhai Ma ()
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Xuanting Liu: Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
Peng Gao: Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
Hongyan Qi: Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
Qifeng Zhang: Shandong Academy of Agricultural Machinery Science, Jinan 250100, China
Mingzhuo Guo: Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
Yunhai Ma: Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China

Agriculture, 2024, vol. 14, issue 7, 1-19

Abstract: To design a high-performance stubble-breaking device, studying the interaction mechanisms between blades and root–soil composites is urgent. A simplified experimental method was proposed to investigate the cutting process and the effects of key factors on cutting by conducting cutting experiments on remolded root–soil composites and maize root–soil composites. The results showed that the soil support force and root–soil interface force significantly impacted cutting. Higher soil compaction and root–soil interface forces helped avoid root dragging, but higher soil compaction and thicker roots led to greater resistance. The superposition and accumulation effects significantly increased the cutting force, especially when root distribution was denser; as the oblique angle and bevel angle increased, the root-cutting force and dragging distance first decreased and then increased. Compared with orthogonal cutting, the optimal angles were both 45° and reduced the root-cutting force by 60.47% and 15.12% and shortened the dragging distance by 22.33 mm and 8.76 mm, respectively. Increasing the slide-cutting angle and cutting speed helped reduce the root-cutting force and dragging distance; however, it also faced greater pure-cutting force. Consequently, the interaction mechanisms between blades and root–soil composites revealed in this study provide a design and optimization basis for stubble-breaking devices, thus promoting the development of no-till technology.

Keywords: stubble-breaking device; blade; root–soil composite; interaction mechanisms; cutting force; dragging distance (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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