Discrete element modeling and verification of the simulation parameters for chopped hybrid Broussonetia papyrifera stems

Caiwang Peng, Junwei Chen, Xi He, Songlin Sun, Yulong Yin, Zhong Chen

Abstract


In this study, the discrete element software EDEM was applied to establish a simulation model of non-uniform-sized particle units for Broussonetia papyrifera stalks, which aimed to address the low utilization rate of existing Broussonetia papyrifera harvesting machinery, the significant variation between the simulated model of Broussonetia papyrifera stalks and their actual appearance, as well as the absence of contact parameter calibration. Through a combination of the free-fall collision method, inclined plane sliding method, and inclined plane rolling method, numerical simulation was conducted to analyze the pattern of variations in contact parameters between Broussonetia papyrifera stalks and the steel material of the machinery. Accordingly, these parameters were calibrated. The results showed that the coefficient of restitution between Broussonetia papyrifera stalks and steel materials was 0.321, the static friction factor was 0.589, and the rolling friction factor was 0.078. With the parameters of contact between Broussonetia papyrifera stalks as variables and the experimentally measured pile angle as the objective of optimization, the steepest ascent experiment and the three-factor five-level rotation combination experiment were conducted. In this way, a second-order response model was constructed to analyze the relationship between the contact parameters and the pile angle. Through the optimization analysis of experimental data, it was determined that the coefficient of restitution between Broussonetia papyrifera stalks was 0.21, the static friction factor was 0.24, and the rolling friction factor was 0.03. Furthermore, the calibration results were validated through experimentation to show that the relative error between the obtained pile angle under the context of optimal parameter combination and the actual one was 4.11%. In addition, the relative error of mass flow rate in spiral transport was within a reasonable range, this study lays a foundation both theoretically and statistically for the simulation of contact parameters for Broussonetia papyrifera stalk harvesting processing, mechanical harvesting, and so on.
Keywords: hybrid Broussonetia papyrifera stem, discrete element method, repose angle, contact parameters, calibration
DOI: 10.25165/j.ijabe.20231701.8408

Citation: Peng C W, Chen J W, He X, Sun S L, Yin Y L, Chen Z. Discrete element modeling and verification of the simulation parameters for chopped hybrid Broussonetia papyrifera stems. Int J Agric & Biol Eng, 2024; 17(1): 23-32.

Keywords


hybrid Broussonetia papyrifera stem, discrete element method, repose angle, contact parameters, calibration

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References


Peng X J, Liu H, Chen P L. A chromosome-scale genome assembly of paper mulberry （Broussonetia papyrifera） provides new insights into its forage and papermaking usage. Molecular Plant, 2019; 12（5）: 661–677.

Tian H, Chen Y, Zhu N, Guo Y Q, Deng M, Liu G B, et al. Effect of Broussonetia papyrifera silage on the serum indicators, hindgut parameters and fecal bacterial community of Holstein heifers. AMB Express, 2020; 10: 197.

Zhang X J, Gao Z L, Wang P S, Xiang L Y. Nutritional value of broussonetia papyrifera fermentation and silage and its application in animal production. Acta Ecologiae Animalis Domastici, 2021; 42（7）: 78–81. （in Chinese）

Zhang X, Zhu S Z, Yang Q, Su Z X, Tan H. Effects of Broussonetia papyrifera fermented diet on growth performance, carcass quality and meat quality of xiangsha pigs commercial line of commercial pigs. Chinese Journal of Animal Nutrition, 2019; 31（12）: 5760–5771. （in Chinese）

He Y K, Li X Y, Ling H, Hu Z C, Tang S G, Yin Y L, et al. Effects of Broussonetia papyrifera silage on growth performance, nutrient apparent digestibility and intestinal health of mutton goats. Chinese Journal of Animal Nutrition, 2021; 33（9）: 5131–5141. （in Chinese）

Zhao X M, Liu J Y, Liu Y P, Liu Y P, Wang X, Jin J, et al. Effects of silage time of tender branches and leaves of Broussonetia papyrifera and feeding beef cattle on its growth performance and fattening benefits. Chinese Journal of Tropical Agriculture, 2022; 42（3）: 51–56. （in Chinese）

Geng D Y, Ji X Q, Mou X D, Li H B, Yang H L, Yao Y C, et al. Design and experiment of harvesting and cutting table of Broussonetia papyrifera. Journal of Jilin University （Engineering and Technology Edition）, 2023; 53（7）: 2152–2164. （in Chinese）

Grima A P, Wypych P W. Development and validation of calibration methods for discrete element modelling. Granular Matter, 2011; 13（2）: 127–132.

Dai F, Song X F, Guo W J, Zhao W Y, Zhang F W, Zhang S L. Simulation and test on separating cleaning process of flax threshing material based on gas-solid coupling theory. Int J Agric & Biol Eng, 2020; 13（1）: 73–81.

Song Z H, Li ., Yan Y F, Tian F Y, Li Y D, Li F D. Calibration method of contact characteristic parameters of soil in mulberry field based on unequal-diameter particles DEM theory. Transactions of the CSAM, 2022; 53（6）: 21–33. （in Chinese）

Yu Q X, Liu Y, Chen X B, Sun K, Lai Q H. Calibration and experiment of simulation parameters for panax notoginseng seeds based on DEM. Transactions of the CSAM, 2020; 51（2）: 123–132. （in Chinese）

Wen X Y, Yuan H F, Wang G, Jia H L. Calibration method of friction coefficient of granular fertilizer by discrete element simulation. Transactions of the CSAM, 2020; 51（2）: 115–122. （in Chinese）

Shi Y Y, Xin （Rex） S, Wang X C, Hu Z C. David Newman, Ding W M. Numerical simulation and field tests of minimum-tillage planter with straw smashing and strip laying based on EDEM software. Computers and Electronics in Agriculture, 2019; 166: 105021.

Wang Q R, Mao H P, Li Q L. Simulation of vibration response of flexible crop stem based on discrete element method. Transactions of the CSAM, 2020; 51（11）: 131–137. （in Chinese）

Ma Y H, Song C D, Xuan C Z, Wang H Y, Yang S, Wu P. Parameters calibration of discrete element model for alfalfa straw compression simulation. Transactions of the CSAE, 2020; 36（11）: 22–30. （in Chinese）

Shi R J, Dai F, Zhao W Y, Zhang F W, Shi L R, Guo J H. Establishment of discrete element flexible model and verification of contact parameters of flax stem. Transactions of the CSAM, 2022; 53（10）: 146–155. （in Chinese）

Liao Y T, Liao Q X, Zhou Y, Wang Z T, Jiang Y J, Liang F. Parameters calibration of discrete element model of fodder rape crop harvest in bolting stage. Transactions of the CSAM, 2020; 51（6）: 73–82. （in Chinese）

Ma Z, Li Y, Xu L. Discrete-element method simulation of agricultural particles’ motion in variable-amplitude screen box. Computers and Electronics in Agriculture, 2015; 118: 92–99.

Lenaerts B, De Ketelaere B, Tijskens E, Herman R, Baerdemaeker J D, Aertsen T, et al. Simulation of grain–straw separation by discrete element modeling with bendable straw particles. Computers and Electronics in Agriculture, 2014; 101: 24–33.

Liu L, Wang X L, Zhang X C, Zhong X K, Wei Z C, Geng Y L, et al. Determination and verification of parameters for the discrete element modelling of single disc covering of flexible straw with soil. Biosystems Engineering, 2023; 233: 151–167.

Ma S, Xu L M, Xu S, Tan H C, Song J F, Shen C C. Wear study on flexible brush-type soil removal component for removing soil used to protect grapevines against cold. Biosystems Engineering, 2023; 228: 88–104.

Du Y Q, Ren F, Li Y, Xi H M, Wang Z, Wen F, et al. Effect of hybrid Broussonetia papyrefera silage on semen quality and feces microbial community of dairy goat. Acta ecologiae animalis domastici, 2022; 43（4）: 55–59. （in Chinese）

Wang L J, Liu T H, Feng X, Gao Y P, Wang B Zhang S. Research progress of the restitution coefficients of collision of particles in agricultural and food fields. Transactions of the CSAE, 2021; 37（20）: 313–322. （in Chinese）

Zhang X R, Hu X H, Liu J X, Yang Y M, Li Y. Calibration and verification of bonding parameters of banana straw simulation model based on discrete element method. Transactions of the CSAM, 2023; 54（5）: 121–130. （in Chinese）




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