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DEM parameters calibration and verification for coated maize particles

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Abstract

The accuracy of discrete element simulation is determined by simulation parameters. In this research, the parameters of coated maize particles were calibrated and verified using the discrete element method. The optimization object was to take the angle of repose at 27.05°, as determined by the physical test. The optimal contact parameters combination based on the discrete element method was obtained using the Plackett–Burman design, steepest ascent experiment, and Box–Behnken test methods. According to the findings, the static friction coefficient of maize particle–maize particle was 0.237, the rolling friction coefficient of maize particle–maize particle was 0.029, and the rolling friction coefficient of maize particle–aluminum alloy was 0.103. The verification test revealed a relative angle of repose inaccuracy of 0.22% between simulation and physical values. It was possible to get the velocity variation laws, and stability values of maize particles that were consistent with the physical situation. The variation tendency of values was compatible with the physical test when the velocity of the coated maize particles was stable, demonstrating the correctness and dependability of the calibrated parameters.

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Acknowledgements

This work was supported by the Natural Science Foundation of Sichuan Province (2022NSFSC0138), Technological Innovation R&D Projects of Chengdu Science and Technology Bureau (2022-YF05-01141-SN), the National Industry System of Corn Technology (CARS-02), and the Key R&D Program of Science & Technology Department of Sichuan Province (2021YFG0063).

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Authors and Affiliations

  1. College of Mechanical and Electrical Engineering, Sichuan Agricultural University, Ya’an, 625014, Sichuan Province, China

    Dan-Dan Han, You Xu, Yu-Xia Huang, Bin He, Jian-Wu Dai, Xiao-Rong Lv & Li-Hua Zhang

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  1. Dan-Dan Han
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  2. You Xu
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Correspondence to Dan-Dan Han.

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We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work, and there is no professional or other personal interest of any kind in any product that could be construed as influencing the position presented in the manuscript entitled “Calibration and verification of DEM parameters for coated maize particles.” Thank you very much. Sincerely yours, Dan-Dan Han, You Xu, Yu-Xia Huang, Bin He, Jian-Wu Dai, Xiao-Rong Lv, Li-Hua Zhang.

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Han, DD., Xu, Y., Huang, YX. et al. DEM parameters calibration and verification for coated maize particles. Comp. Part. Mech. 10, 1931–1941 (2023). https://doi.org/10.1007/s40571-023-00598-7

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  • DOI: https://doi.org/10.1007/s40571-023-00598-7

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