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<p>To improve the precision of the discrete element simulation for the precut sugarcane seed-metering device, this study employed the 3D scanning inverse modeling method to construct the 3D model of the complex stalk segment (cane segment) consisting of cane buds, nodes, cores, and internode skin, and established the discrete element simulation model of the segment. The intrinsic and contact parameters of the segments were measured, and the angle of repose test, orthogonal test, Plackett–Burman test, steepest ascent test, and Box–Behnken test methods were used to calibrate and validate the contact parameters of the discrete element model. The collision recovery coefficients for the interactions between internode skin–steel, cane node–steel, cane bud–steel, internode skin–skin, cane node–internode skin, cane bud–internode skin, cane node–node, cane bud–node, and cane bud–bud were determined as 0.3391, 0.2805, 0.3660, 0.2361, 0.4411, 0.4121, 0.4553, 0.3434, and 0.1564, respectively. The static friction coefficients were determined as 0.0989, 0.0998, 0.2460, 0.4198, 0.2886, 0.5161, 0.5038, 0.7696, and 0.3281, respectively, and the rolling friction coefficients as 0.0321, 0.0135, 0.1026, 0.0250, 0.0263, 0.0690, 0.0684, 0.1788, and 0.0761, respectively. The error between the simulated and physical angle of repose tests was 0.62%, confirming the model’s high accuracy. This study provides an accurate stalk model for seeding simulations and proposes a novel modeling approach for complex crop stalks.</p>

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Research on Discrete Element Modeling and Contact Parameter Calibration Methods for Complex Sugarcane Stalk Segments

  • 期刊论文

  • 发表日期：

    2025年7月3日

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  • Wang Yang,
  • Jianming Yao,
  • Debang Zhang,
  • Junhui Xi,
  • Yu Huang,
  • Zhiheng Lu

摘要

To improve the precision of the discrete element simulation for the precut sugarcane seed-metering device, this study employed the 3D scanning inverse modeling method to construct the 3D model of the complex stalk segment (cane segment) consisting of cane buds, nodes, cores, and internode skin, and established the discrete element simulation model of the segment. The intrinsic and contact parameters of the segments were measured, and the angle of repose test, orthogonal test, Plackett–Burman test, steepest ascent test, and Box–Behnken test methods were used to calibrate and validate the contact parameters of the discrete element model. The collision recovery coefficients for the interactions between internode skin–steel, cane node–steel, cane bud–steel, internode skin–skin, cane node–internode skin, cane bud–internode skin, cane node–node, cane bud–node, and cane bud–bud were determined as 0.3391, 0.2805, 0.3660, 0.2361, 0.4411, 0.4121, 0.4553, 0.3434, and 0.1564, respectively. The static friction coefficients were determined as 0.0989, 0.0998, 0.2460, 0.4198, 0.2886, 0.5161, 0.5038, 0.7696, and 0.3281, respectively, and the rolling friction coefficients as 0.0321, 0.0135, 0.1026, 0.0250, 0.0263, 0.0690, 0.0684, 0.1788, and 0.0761, respectively. The error between the simulated and physical angle of repose tests was 0.62%, confirming the model’s high accuracy. This study provides an accurate stalk model for seeding simulations and proposes a novel modeling approach for complex crop stalks.