Stability research of the cavity under the action of the drilling mechanism based on the inverse effect of cavity expansion method

Authors

  • Gaowei Xu 1. Department of Automotive Engineering, Shandong Jiaotong University, Jinan 250357, China;
  • Yuebao Wang 1. Department of Automotive Engineering, Shandong Jiaotong University, Jinan 250357, China;
  • Zhenjuan Tang 1. Department of Automotive Engineering, Shandong Jiaotong University, Jinan 250357, China;
  • Huimin Fang 2. School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China;
  • Junxiao Liu 3. School of Mechanical and Electrical Engineering, Hainan University, Haikou 570228, China;
  • Yanxiang Chen 4. College of Civil and Environmental Engineering, Hunan University of Science and Engineering, Yongzhou 425199, Hunan, China

Keywords:

agricultural engineering, farm machine

Abstract

Cavity maintenance is critical for ensuring the early growth and development of transplanted crops. A dense soil layer formed by a non-circular gear–parallel four-bar drilling mechanism serves as the key link between the drilling process and cavity stability. To optimize the operating parameters of the drilling mechanism for enhanced soil–machine interaction, this study systematically analyzed its structural configuration and working principles. Based on the inverse effect of cavity expansion theory, an elasto-plastic mechanical model of cavity surrounding soil is established, and the critical condition for cavity maintenance is derived. Using measured soil mechanical parameters at different moisture contents combined with the critical condition, the critical shear stress undertaken by the dense soil layer is calculated to determine the optimization objectives. Key response indicators and influencing factors are identified through the elasto-plastic model. A quadratic orthogonal rotary central composite design is adopted in soil-bin tests to establish regression equations between cavity maintenance indicators and influencing factors. Response surface methodology is employed to analyze effect trends and interaction effects, and a multi-objective optimization method based on the regression model is proposed to obtain the optimal parameter combination. Experimental results demonstrate that the optimized drilling parameters significantly improve cavity stability and operational performance. This study provides a theoretical basis and practical guidance for optimizing the operating parameters of drilling mechanisms from the perspective of soil mechanics.      

Keywords: cavity transplanting; cavity drilling; model for the cavity maintenance; optimization

DOI: 10.25165/j.ijabe.20261903.10386

Citation: Xu G W, Wang Y B, Tang Z J, Fang H M, Liu J X, Chen Y X. Stability research of the cavity under the action of the drilling mechanism based on the inverse effect of cavity expansion method. Int J Agric & Biol Eng, 2026; 19(3): 50–60.

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Published

2026-07-14

How to Cite

(1)
Xu, G.; Wang, Y.; Tang, Z.; Fang, H.; Liu, J.; Chen, Y. Stability Research of the Cavity under the Action of the Drilling Mechanism Based on the Inverse Effect of Cavity Expansion Method. Int J Agric & Biol Eng 2026, 19, 50–60.

Issue

Vol. 19 No. 3 (2026): IJABE

Section

Applied Science, Engineering and Technology

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Copyright (c) 2026 International Journal of Agricultural and Biological Engineering

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