Construction of virtual mulch film model based on discrete element method and simulation of its physical mechanical properties
Keywords:
discrete element method, mulching film, physical and mechanical properties, virtual testAbstract
In China, especially in Xinjiang Region, mulch film remaining in the soil has severely jeopardized the safety of soil resources. To numerically simulate the residual film-soil-recovery implementation system, a virtual mulch film model with consistent physical and mechanical properties with real mulch film needs to be established. In this study, a flexible deformable virtual mulch film model was constructed using YADE software based on the Minkowski Sum principle and the ball-ball force-displacement constitutive rule, as well as the contact failure rule were established. The deformation behaviors of cylinders and PFacet elements, such as stretching, bending, and torsion, were described. By splicing the basic PFacet elements, a virtual mulch model was established. The mechanical model of a virtual mulch film under tension was established and the axial tensile stiffness coefficient kn was determined to be 43.30 N·m. To verify the physical and mechanical properties of this virtual mulch film, both real and virtual stretching and tearing tests were conducted. The experimental results showed that: in the process of stretching and tearing of real and virtual films, the properties of morphological features of both are basically identical; however, they clearly differ in force-displacement. The viscoelastic constitutive model between balls and yield judgment conditions requires further study. Keywords: discrete element method, mulching film, physical and mechanical properties, virtual test DOI: 10.25165/j.ijabe.20201304.5525 Citation: Guo W S, Hu C, He X W, Wang L, Hou S L, Wang X F. Construction of virtual mulch film model based on discrete element method and simulation of its physical mechanical properties. Int J Agric & Biol Eng, 2020; 13(4): 211–218.References
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[2] Yan C R, Liu E K, Shu F, Liu Q, Liu S, He W Q. Review of agricultural plastic mulching and its residual pollution and prevention measures in china. Journal of Agricultural Resources and Environment, 2014; 31(2): 95–102. (in Chinese)
[3] Zhao Y, Chen X G, Wen H J, Zheng X, Niu Q, Kang J M. Research status and prospect of control technology for residual plastic film pollution in farmland. Transactions of the CSAM, 2017; 48(6): 1–12. (in Chinese)
[4] Li Y Q, He W Q, Yan C R, Guo R, Zhao C X. Effects of agricultural plastic residual films on morphologic and physiological characteristics of root system of cotton and maize in seedling stage. Journal of Agricultural Resources and Environment, 2017; 34(2): 108–114. (in Chinese)
[5] Tang W X, Ma Z M, Wei T. Effects of adopting different kinds of collecting method for years on film residual coefficient and maize yields. Journal of Agricultural Resources and Environment, 2017; 34(2): 102–107. (in Chinese)
[6] Guo W S, Jian J M, San Y L, Li G, Gao M Q, Hou S L. Design and experimental optimization of 4CML-1000 type chain rake film recycling machine. Transactions of the CSAM, 2018; 49(2): 66–73. (in Chinese)
[7] Wang X F, Hu C, Lu B, Yi X K, Hou S L. Design and Experiment of Sprocket Conveying Residual Film Recycling Machine of Casting Film. Transactions of the CSAM, 2018; 49(3):122–129.
[8] Hou S L, Hu S Y, Kong J M, Zhang H Y, Na M J, Dong X. Present situation of research on plastic film residue collector in China. Transactions of the CSAE, 2002;18(3):186–190. (in Chinese)
[9] Zhang P F, Hu C, Wang X F, Lu B, Liu C J. Kinetic analysis of rotary tillage nail tooth plastic film recycling machine hook film unit. Journal of Agricultural Mechanization Research, 2018; 40(4): 14–18, 25. (in Chinese)
[10] Chen F, Shi J X, Wang X N, Zhao H J. Study on collecting principle of arc-type tooth roller for collecting plastic residue. Transactions of the CSAM, 2006; 37(6): 36–41. (in Chinese)
[11] Dai F, Zhao W Y, Sun W, Wu Z W, Song X F, Li Y. Design and experiment of combined operation machine for potato harvesting and plastic film pneumatic auxiliary collecting. Transactions of the CSAM, 2017; 48(1): 64–72. (in Chinese)
[12] Na M J, Dong X, Hou S L, Li Y Q, Yang X L. Research on main components of the machine for retrieving the used plastic film after harvesting. Transactions of the CSAE, 1999; 15(2): 112–115. (in Chinese)
[13] Xie J H, Hou S L, Fu Y, Na M J, Zhang H Y. Motion analysis and experiment on spring-tooth mulching plastic film collector. Transactions of the CSAM, 2013; 44 (S1): 94–99. (in Chinese)
[14] Wen S F, Xu H L, Zhi X Z. Simulation of free vibration characteristics of cable-membrane structure. Computer Simulation, 2009; 26(4): 328–330, 334. (in Chinese)
[15] Han K L, Guan F L, Cao L, Fu A J. Deployment simulation analysis of inflatable membrane structures. Journal of building structures, 2010; 31(S1): 288–292. (in Chinese)
[16] Jin X. Numerical simulation of fluid structure interaction on tensioned membrane structure. MS dissertation: Harbin Institute of Technology, 2012; 72p. (in Chinese)
[17] Lobo-Guerrero S, Vallejo L E. Fiber-reinforcement of granular materials: Dem visualization and analysis. Geomechanics and Geoengineering Geoengin, 2010; 5(2): 79–89.
[18] Tran V D H, Meguid M A, Chouinard L E. A finite-discrete element framework for the 3D modeling of geogrid-soil interaction under pullout loading conditions. Geotextiles and Geomembranes, 2013; 37: 1–9.
[19] Effeindzourou A, Chareyre B, Thoeni K, Giacomini A, Kneib F. Modelling of deformable structures in the general framework of the discrete element method. Geotextiles and Geomembranes, 2016; 44(2): 143–156.
[20] Thoeni K. Discrete Modelling of Soil-Inclusion Problems. Applied Mechanics and Materials, 2016; 46(8): 397–402.
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Published
2020-08-07
How to Cite
Guo, W., Hu, C., He, X., Wang, L., Hou, S., & Wang, X. (2020). Construction of virtual mulch film model based on discrete element method and simulation of its physical mechanical properties. International Journal of Agricultural and Biological Engineering, 13(4), 211–218. Retrieved from https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/5525
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Information Technology, Sensors and Control Systems
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