Determination of the coefficient of rolling friction of irregularly shaped maize particles by using discrete element method
Keywords:
coefficient of rolling friction, maize, irregularly shaped model, angle of repose, discrete element methodAbstract
The coefficient of rolling friction is a foundation parameter for conducting particles simulation, however, which of irregularly shaped maize seeds is difficult to measure. Furthermore, the coefficient of rolling friction between the simulation particles and the actual seeds is inconsistent due to the shaped difference of model and different position of gravity center. This paper use two methods to determinate the coefficient of rolling friction based on discrete element method (DEM) and physical experiments. Three types of maize models from five different shaped maize samples (including horse-tooth shape, spherical cone shape, spherical shape, oblate shape, irregular shape) were developed with the help of slice modeling and 3D modeling technology. Aluminum cylinder container is used to arrange the simulation experiments of angle of repose with taking the coefficient of rolling friction as independent variables and the simulation angle of repose as target values. After predicting detailed the coefficient of rolling friction (including horse-tooth shape, spherical cone shape, spherical shape, between horse-tooth shape and spherical cone shape, between horse-tooth shape and spherical shape, between spherical shape and spherical cone shape maize models), and forecasting a unified the coefficient of rolling friction among horse-tooth shape, spherical cone shape and spherical shape maize models, two types of materials (aluminum cylinder container and organic glass container) were used to validate the difference the angle of repose between the simulation maize models and actual maize seeds. Results show the relative error of the angle of repose between the maize models controlled by the coefficient of rolling friction through the detailed method and the actual maize seeds is 0.22%, 0.33% in aluminum cylinder, organic glass container, respectively. The relative error of the angle of repose between the simulation maize models controlled by the coefficient of rolling friction through the united method and actual maize seeds is 2.47%, 2.97% in aluminum cylinder, organic glass container, respectively. Although the difference of the angle of repose between two method is smaller, the detailed method is better. Moreover, From the accumulation process of the angle of repose we found that the difference on the contacts number between maize models and bottom plate, the change curve of the rotational kinetic energy, the potential energy of maize models controlled by the coefficient of rolling friction through the detailed and the united method are evidently. We can choose a better method to predict the coefficient of rolling friction of maize seeds according to the application situation and investigation objective of irregular maize seeds. The results can provide a theoretical basis for designing and optimizing the structure of the seed-metering machine with DEM. Keywords: coefficient of rolling friction, maize, irregularly shaped model, angle of repose, discrete element method DOI: 10.25165/j.ijabe.20201302.4688 Citation: Shi L R, Zhao W Y, Sun B G, Sun W. Determination of the coefficient of rolling friction of irregularly shaped maize particles by using discrete element method. Int J Agric & Biol Eng, 2020; 13(2): 15–25.References
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[2] Wang Y X, Liang Z J. Calibration method of contact characteristic parameters for corn seeds based on EDEM. Transactions of the CSAE, 2016; 32(22): 36–42. (in Chinese)
[3] Wensrich C M, Katterfeld A. Rolling friction as a technique for modelling particle shape in DEM. Powder Technology, 2012; 217(2): 409–417.
[4] Wiącek J, Molenda M, Horabik J, Jin Y O. Influence of grain shape and intergranular friction on material behavior in uniaxial compression: Experimental and DEM modeling. Powder Technology, 2012; 217(2): 435–442.
[5] Chen Z R, Yu J Q, Xue D M, Wang Y, Zhang Q, Ren L Q. An approach to and validation of maize-seed-assembly modelling based on the discrete element method. Powder Technology, 2018; 328(4): 167–183.
[6] Wiacek J, Molenda M, Horabik J, Ooi J Y. Influence of grain shape and intergranular friction on material behavior in uniaxial compression: Experimental and DEM modeling. Powder Technology, 2012; 217(2): 435–442.
[7] Höhner D, Wirtz S, Scherer V. Experimental and numerical investigation on the influence of particle shape and shape approximation on hopper discharge using the discrete element method. Powder Technology, 2013; 235: 614–627.
[8] Khazeni A, Mansourpour Z. Influence of non-spherical shape approximation on DEM simulation accuracy by multi-sphere method. Powder Technology, 2018; 332(6): 265–278.
[9] Balevičius R, Sielamowicz I, Mróz Z, Kačianauskas R. Effect of rolling friction on wall pressure, discharge velocity and outflow of granular materialfrom a flat-bottomed bin. Particuology, 2012; 10(6): 672–682.
[10] Han Y L, Jia F G, Tang Y R, Liu Y, Zhang Q. Influence of granular coefficient of rolling friction on accumulation characteristics. Acta Physica Sinica, 2014; 63(17): 533–538.
[11] Zeng Y, Jia F, Meng X, Han Y, Xiao Y. The effects of friction characteristic of particle on milling process in a horizontal rice mill. Advanced Powder Technology, 2018; 29(5): 1280–1290.
[12] Jayasundara C T, Yang R Y, Yu A B, Curry D. Discrete particle simulation of particle flow in IsaMill—effect of grinding medium properties. Chemical Engineering Journal, 2008; 135(1): 103–112.
[13] He Y, Evans T J, Yu A B, Yang R Y. DEM investigation of the role of friction in mechanical response of powder compact. Powder Technology, 2017; 319: 183–190.
[14] Wang L, Li R, Wu B, Wu Z, Ding Z. Determination of the coefficient of rolling friction of an irregularly shaped maize particle group using physical experiment and simulations. Particuology, 2017; 38(6): 185–195.
[15] Cui T, Liu J, Yang L, Zhang D X, Zhang R, Lan W. Experiment and simulation of rolling friction characteristic of corn seed based on high-speed photography. Transactions of the CSAE, 2013; 29(15): 34–41. (in Chinese)
[16] Wang Y X, Liang Z J, Zhang D X, Cui T, Shi S, Li K H, et al. Calibration method of contact characteristic parameters for corn seeds based on EDEM. Transactions of the CSAE, 2016; 32(22): 36–42. (in Chinese)
[17] Tanaka H, Momozo M, Oida A, Yamazaki M. Simulation of soil deformation and resistance at bar penetration by distinct element method. Journal of Terramechanics, 2000; 37(1): 41–56.
[18] ASAE. Compression test of food materials of convex shape, ASAE Standards 2002: Standards Engineering Practices 49, 2002; pp.592–599.
[19] Boac J M, Casada M E, Maghirang R G, Harner J P. Material and interaction properties of selected grains and oilseeds for modeling discrete particles, Trans. ASABE. 2010; 53(4): 1201–1216.
[20] Horabik J, Molenda M. Parameters and contact models for DEM simulations of agricultural granular materials: a review. Biosystems Engineering, 2016, 147, 206–225.
[21] González-Montellano C, Fuentes J M, Ayuga-Téllez E, Ayuga F. Determination of the mechanical properties of corn grains and olives required for use in DEM simulations. Journal of Food Engineering, 2012; 111(4): 553–562.
[22] Wang L J, Zhou W X, Ding Z J, Li X X, Zhang C G.. Experimental determination of parameter effects on the coefficient of restitution of differently shaped maize in three-dimensions. Powder Technology, 2015;
284 (10): 187–194.
[23] Shi L R, Zhao W Y, Wu J M, Zhang F W, Sun W, Dai F, et al. Application of slice modeling technology in finite element analysis of agricultural products. Journal of Chinese Agricultural Mechanization, 2013; 6: 110–112. (in Chinese)
[24] Markauskas D, Kačianauskas R, Džiugys A, Navakas R. Investigation of adequacy of multi-sphere approximation of elliptical particles for DEM simulations. Granular Matter, 2010; 12(1): 107–123.
[25] Markauskas D, Ramírez-Gómez Á, Kačianauskas R, Zdancevičius E. Maize grain shape approaches for DEM modeling. Computers & Electronics in Agriculture, 2015; 118(C): 247–258.
[26] Shi S. Design and experimental study of corn precision seed metering device with air pressure combined hole. Beijing: China Agricultural University, 2015; pp.27–51.
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Published
2020-04-10
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Shi, L., Zhao, W., Sun, B., & Sun, W. (2020). Determination of the coefficient of rolling friction of irregularly shaped maize particles by using discrete element method. International Journal of Agricultural and Biological Engineering, 13(2), 15–25. Retrieved from https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/4688
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