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Agriculture
Volume 15
Issue 17
10.3390/agriculture15171824
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Article

Mechanical Properties of Corn Stalks and Behavior of Particles During Compression Process Based on Discrete Element Method

by
Junming Hou
*,
Zheng Li
,
Yue Ma
,
Yandong Xu
,
Hao Ding
,
Chenglong Li
,
Chenghao Li
,
Qiang Tang
and
Minghui Liu
College of Engineering, Shenyang Agricultural University, 120 Dongling Road, Shenhe District, Shenyang 110866, China
*
Author to whom correspondence should be addressed.
Agriculture 2025, 15(17), 1824; https://doi.org/10.3390/agriculture15171824
Submission received: 11 July 2025 / Revised: 17 August 2025 / Accepted: 21 August 2025 / Published: 27 August 2025
(This article belongs to the Section Agricultural Technology)
Versions Notes

Abstract

The mechanical properties of corn stalks play a crucial role in the design of packing and harvesting equipment. Complete and damaged stalks were used to simulate stalk mixtures during the collection process. This study measured the mechanical characteristics of complete stalks and damaged stalks through experiments. A discrete element method (DEM) model was established which incorporated both the skin and core tissues of the samples. The compression behavior of the stalks was analyzed with the EDEM 2022 software. The results indicate that the complete stalks exhibited both a plastic and second plastic stage, while the damaged stalks fractured immediately upon reaching peak stress. The models of the complete and damaged stalks were validated through a radial compression test. An analysis of the relative errors and particle velocities enabled the quantification of experimental accuracy, ensured the reliability of the experimental data, and revealed the dynamic behavior mechanism of the materials under mechanical loading. The simulation results show that the maximum compression force is 254.11 N and 33.1 N, with a 1.5% and 12.3% relative error compared to the experiment. The particle velocity in the core part is the largest, which is 9.83 × 104 mm/s and 3.51 × 105 mm/s. This study can provide a theoretical reference for researching the mechanical behavior and compressive failure of stalks.
Keywords: corn stalk; DEM; mechanical property; compression test; behavior corn stalk; DEM; mechanical property; compression test; behavior

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MDPI and ACS Style

Hou, J.; Li, Z.; Ma, Y.; Xu, Y.; Ding, H.; Li, C.; Li, C.; Tang, Q.; Liu, M. Mechanical Properties of Corn Stalks and Behavior of Particles During Compression Process Based on Discrete Element Method. Agriculture 2025, 15, 1824. https://doi.org/10.3390/agriculture15171824

AMA Style

Hou J, Li Z, Ma Y, Xu Y, Ding H, Li C, Li C, Tang Q, Liu M. Mechanical Properties of Corn Stalks and Behavior of Particles During Compression Process Based on Discrete Element Method. Agriculture. 2025; 15(17):1824. https://doi.org/10.3390/agriculture15171824

Chicago/Turabian Style

Hou, Junming, Zheng Li, Yue Ma, Yandong Xu, Hao Ding, Chenglong Li, Chenghao Li, Qiang Tang, and Minghui Liu. 2025. "Mechanical Properties of Corn Stalks and Behavior of Particles During Compression Process Based on Discrete Element Method" Agriculture 15, no. 17: 1824. https://doi.org/10.3390/agriculture15171824

APA Style

Hou, J., Li, Z., Ma, Y., Xu, Y., Ding, H., Li, C., Li, C., Tang, Q., & Liu, M. (2025). Mechanical Properties of Corn Stalks and Behavior of Particles During Compression Process Based on Discrete Element Method. Agriculture, 15(17), 1824. https://doi.org/10.3390/agriculture15171824

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