Mathematical model of the cross-section of wheat grain
- 作者: Nikitin V.V.1, Ozhereliev V.N.1, Sinyaya N.V.1
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隶属关系:
- Bryansk State Agrarian University
- 期: 卷 91, 编号 1 (2024)
- 页面: 91-100
- 栏目: Theory, designing, testing
- URL: https://bakhtiniada.ru/0321-4443/article/view/260274
- DOI: https://doi.org/10.17816/0321-4443-622847
- ID: 260274
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BACKGROUND: When studying the optimal length of the holes in the lattice bottom of the inclined chamber of a combine harvester, which ensures preliminary separation of the combed grain heap, the cross section of wheat grain was modeled in the shape of a separate ball or a cut cylinder. This is due to the fact that the description of the technological process is significantly simplified with this shape of grain. However, such models of the grain cross-section are very far from the real shape of the object, since the dorsal side of the grains is convex, and there is a longitudinal groove on the ventral side. The kind of surface closest to the real shape of the grain is the Pascal’s snail mathematical model. For this model, the centroid coordinates are determined, and equations are obtained for calculating its cross-sectional area and moments of inertia for each coordinate axis. Verification of the obtained equations in the KOMPAS-3D software showed that the discrepancy between the real and theoretically predicted values of the centroid coordinates is about 13%, which reduces the adequacy of the calculations and requires their refinement.
AIM: Refinement of the mathematical model of the cross-section of wheat grain shaped as the Pascal’s snail.
METHODS: The object of the study is a cross section of wheat grain shaped as the Pascal’s snail. When determining the centroid coordinates, methods of theoretical mechanics were used, and the resulting expressions were verified in the KOMPAS-3D three-dimensional modeling software.
RESULTS: Mathematical expressions for analytical calculation of the centroid coordinates are obtained for different versions of the Pascal’s snail: a = b (cardioid), a < b (the Pascal’s snail without an internal loop), a > b (the Pascal’s snail with an internal loop). Verification of the obtained expressions proves their adequacy, since the convergence of theoretical and experimental data is 100%.
CONCLUSIONS: The use of refined mathematical models of the cross-section of wheat grain can significantly simplify the modeling of the separation process of combed heaps, as well as to increase the accuracy of calculations. To simplify the description of this process, it is advisable to use the KOMPAS-3D three-dimensional modeling software.
作者简介
Victor Nikitin
Bryansk State Agrarian University
编辑信件的主要联系方式.
Email: viktor.nike@yandex.ru
ORCID iD: 0000-0003-1393-2731
SPIN 代码: 5246-6938
Scopus 作者 ID: 57201686117
Associate Professor, Dr. Sci. (Engineering), Head of the Technical Service Department
俄罗斯联邦, 2a Sovetskaya street, 243365 Kokino, Vygonichsky District of Bryansk OblastVictor Ozhereliev
Bryansk State Agrarian University
Email: vicoz@bk.ru
ORCID iD: 0000-0002-2121-3481
SPIN 代码: 3423-0991
Scopus 作者 ID: 57195608281
Professor, Dr. Sci. (Agriculture), Professor of the Technical Systems in Agrobusiness, Environmental Management and Road Construction Department
俄罗斯联邦, 2a Sovetskaya street, 243365 Kokino, Vygonichsky District of Bryansk OblastNatalia Sinyaya
Bryansk State Agrarian University
Email: sinzea@yandex.ru
ORCID iD: 0000-0002-1794-1347
SPIN 代码: 9225-4347
Cand. Sci. (Engineering), Associate Professor of the Technical Service Department
俄罗斯联邦, 2a Sovetskaya street, 243365 Kokino, Vygonichsky District of Bryansk Oblast参考
- Buryanov AI, Chervyakov IV. Using combines for cleaning grain crops by non-traditional technologies. INMATEH — Agricultural Engineering. 2019;59(3):27–32. doi: 10.35633/INMATEH-59-03
- Lachuga YuF, Buryanov AI, Pakhomov VI, et al. Adaptation of threshing devices to physical and mechanical characteristics of harvested crops. Russian Agricultural Sciences. 2020;46(2): 198–201. doi: 10.3103/S1068367420020111
- Zhalnin EV. Technical innovations in agricultural production and resource-saving effect. AgroSnabForum. 2017;3(151):14. (in Russ.) EDN: YMDHKX
- Zhalnin EV. Cleaning with a comb on the root: pros and cons. Sel’skij mekhanizator. 2013;8:10–12 (in Russ.) EDN: RCFKAZ
- Lezhenkin AM, Kravchuk VI, Kushnarev AS. Tekhnologiya uborki zernovyh kul’tur metodom ochesyvaniya na kornyu: sostoyanie i perspektivy. Doslidnitskoe; 2010. (in Russ.)
- Ozherelev VN, Nikitin VV. The results of the combine design adaptation to work with a stripper header. Inzhenernye tekhnologii i sistemy. 2022;32(2):190–206 (in Russ.) EDN: RBNYLL doi: 10.15507/2658-4123.032.202202.190-206
- Ozherelyev VN, Nikitin VV, Belous NM, et al. Perspectives of grain pile separation before it enters the thresh-ER. International Journal of ngineering and Technology (UAE). 2018;7(2.13):14–116.
- Nikitin VV. Determination of the optimal length of the bottom of the inclined chamber of a combine harvester when weighing. Sel’skij mekhanizator. 2018;5:8–9 (in Russ.) EDN: XWCSDZ
- Goryachkin VP. Sobranie sochinenij. 3 Vols. Moscow: Kolos; 1968;1. (in Russ.)
- Vasilenko VV, Vasilenko SV, Baskakov IV. Rational scheme of a feeder of a stationary threshing machine of a combed heap. Vestnik Voronezhskogo gosudarstvennogo agrarnogo universiteta. 2022;15(74):12–18. (in Russ.)
- Ozherelev VN, Nikitin VV, Komogortsev VF. Inclined chamber of a combine harvester. Vestnik Bryanskoj gosudarstvennoj sel’skohozyajstvennoj akademii. 2016;3:65–70. (in Russ.).
- Nikitin VV. Sovershenstvovanie tekhnologicheskoj skhemy zernouborochnogo kombajna i parametrov ego rabochih organov [dissertation] Bryansk; 2021. (in Russ.) EDN: TRVVBB
- Mayatskaya I.A. Development of mechanical and mathematical models of seeds of agricultural crops harvested by grain combines [Abstract dissertation]. Rostov-on-Don; 2000. (in Russ.) EDN: ZKLDMX
- Mayatskaya I. A., Demchenko B.M. Determination of the mid-section of plant objects of various shapes. Internet-zhurnal Naukovedenie. 2013;3(16):109. (in Russ.) EDN: QZXZEB
- Targ S.M. Kratkij kurs teoreticheskoj mekhaniki. Moscow: Vysshaya shkola; 2010. (in Russ.)
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