Analysis of Finite Element Method on Dynamic Contact of Corn Ear

doi:10.16182/j.issn1004731x.joss.201701010

Abstract

Abstract: According to the arrangement law of corn ear kernels, the solid model and the finite element model of the corn ear were established. ANSYS LS-DYNA software was used to analyze the distribution and transmission of stress on the corn ear shocked by wedge impact head. The simulation shows that on the corn ear the Von Mises of the region which is shocked is bigger than other region. Initial phase of the impact head shocking the corn ear, the Von Mises concentrate on both sides of shocked corn kernels. With the falling of the impact head, the Von Mises transmit to both sides of shocked corn kernels further and the stalk of corn was broken sequentially to the both sides of shocked corn kernel and the Von Mises was not so concentrated as before. It is found that the discrete features and the discrete direction of the shocked kernels are consistent with the simulated results by comparing the model calculation and the test results. The discrete of kernels and the transmission of Von Mises is along with the arrangement law of corn ear.

Key words: corn, ear, dynamic contact, finite element method

CLC Number:

TJ765.4

Li Xinping, Ma Lei. Analysis of Finite Element Method on Dynamic Contact of Corn Ear[J]. Journal of System Simulation, 2017, 29(1): 67-75.

References

[1] 徐立章, 李耀明, 王显仁. 谷物脱粒损伤的研究进展分析[J]. 农业工程学报, 2009, 25(1): 303-307.
(Xu Lizhang, Li Yaoming, Wang Xianren.Research development of grain damage during threshing[J]. Transactions of the Chinese Society of Agricultural Engineering (S1002-6819), 2009, 25(1): 303-307.)
[2] 王子才. 仿真科学的发展及形成[J]. 系统仿真学报, 2005, 17(6): 1279-1281.
(Wang Zicai.Development and Formation of Simulation Science[J]. Journal of System Simulation (S1004-731X), 2005, 17(6): 1279-1281.)
[3] 李伯虎, 柴旭东, 朱文海, 等. 现代建模与仿真技术发展中的几个焦点[J]. 系统仿真学报, 2004, 16(9): 1871-1878.
(Li Bohu, Chai Xudong, Zhu Wenhai, et al.Some Focusing Points in Development of Modern Modeling and Simulation Technology[J]. Journal of System Simulation,(S1004-731X), 2004, 16(9): 1871-1878.)
[4] 刘晓平, 唐益明, 郑利平, 等. 复杂系统与复杂系统仿真研究综述[J]. 系统仿真学报, 2008, 20(23): 6303-6315.
(Liu Xiaoping, Tang Yiming, Zhang Liping.Survey of Complex System and Complex System Simulation[J]. Journal of System Simulation (S1004-731X), 2008, 20(23): 6303-6315.)
[5] K Muthukumarappan, S Gunasekaran.Moisture Diffusivity of Corn Kernel Components During Adsorption Part II: Pericarp[J]. Transactions of the ASAE (S0001-2351), 1994, 37(4): 1269-1274.
[6] K Muthukumarappan, S Gunasekaran.Moisture Diffusivity of Corn Kernel Components During Adsorption PartIII: Soft and Hard Endosperms[J]. Transactions of the ASAE (S0001-2351), 1994, 37(4): 1275-1280.
[7] Tijskens E, Ramon H, Baerdemaeker J De.Discrete element modeling for process simulation in agriculture[J]. Journal of Sound and Vibration(S0022-460X), 2003, 266(3): 496-514.
[8] Bruce D M, Hobson R N, Morgan C L, et al.Thresh ability of Shatter-Resistant Seed Pods in Oilseed Rape[J]. Journal of Agricultural Engineering Research (S0021-8634), 2001, 80(4): 343-350.
[9] Turgut Ö Ztürk, Bilge Esen.Physical and mechanical properties of some hybrid corn varieties[J]. Journal of Agricultural and Biological Engineering (S1934-6344), 2013, 6(1): 111-116.
[10] Songül Gürsoy, Ruplal Choudhary, Dennis G Watson.Microwave drying kinetics and quality characteristics of corn[J]. International Journal of Agricultural and Biological Engineering (S1934-6344), 2013, 6(1): 90-99.
[11] Gopal U Shinde, Shyam R Kajale.Computer aided engineering analysis and design optimization of rotary tillage tool components[J]. Journal of Agricultural and Biological Engineering (S1934-6344), 2011, 4(3): 1-6.
[12] K Muthukumarappan, S Gunasekaran.Finite Element Simulation of Corn Moisture Adsorption[J]. Transactions of the ASAE (S0001-2351), 1996, 39(6): 2217-2222.
[13] 白欣欣, 刘继展, 李萍萍. 有限元法在农业物料力学研究中的应用进展[J]. 农机化研究, 2013, (8): 5-8.
(Bai Xinxin, Liu Jizhan, Li Pingping.The Application Progress of agricultural material mechanics research with finite element method[J]. Journal of Agricultural Mechanization Research, 2013, (8): 5-8.)
[14] 于亚军, 周海玲, 付宏等. 基于颗粒聚合体的玉米果穗建模方法[J]. 农业工程学报, 2012, 28(8): 167-174.
(Yu Yajun, Zhou Hailing, Fu Hong, et al.Modeling method of corn ears based on particles agglomerate[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE),(S1002-6819), 2012, 28(8): 167-174.)
[15] 李心平, 刘赢, 马义东, 等. 玉米果穗籽粒间缝隙走向对其循环力衰败的影响[J]. 农机化研究, 2015, 37(1): 183-187.
(Li Xinping, Liu Ying, Ma Yidong.et al.Effect of Gap Direction Among Corn Ear Kernels on the Circulating Dint Decline[J]. Journal of Agricultural Mechanization Research, 2015, 37(1): 183-187.)
[16] 徐立章, 李耀明, 丁林峰. 水稻谷粒与脱粒元件撞过程的接触力学分析[J]. 农业工程学报, 2008, 24(6): 146-149.
(Xu Lizhang, Li Yaoming, Ding Linfeng.Contacting mechanics analysis during impact process between rice and threshing component[J]. Transactions of the CSAE, 2008, 24(6): 146-149.)
[17] 卿艳梅, 李长友, 黄汉东, 等. 龙眼力学特性的有限元分析[J]. 农业机械学报, 2011, 42(6): 143-147.
(Qing Yanmei, Li Changyou, Huang Handong, et al.Finite Element Analysis on Mechanical Properties of Longan[J]. Transactions of the Chinese Society for Agricultural Machinery (S1000-1298), 2011, 42(6): 143-147. (in Chinese))
[18] 赵淑红, 蒋恩臣, 闫以勋, 等. 小麦播种机开沟器双向平行四杆仿形机构的设计及运动仿真[J]. 农业工程学报, 2013, 29(14): 26-32.
(Zhao Shuhong, Jiang Enchen, Yan Yixun, et al.Design and motion simulation of opener with bidirectional parallelogram linkage profiling mechanism on wheat seeder[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE)(S1002-6819), 2013, 29(14): 26-32.(in Chinese with English abstract))
[19] 石林榕, 吴建民, 孙伟, 等. 基于离散单元法的水平圆盘式精量排种器排种仿真试验[J]. 农业工程学报, 2014, 30(8): 40-48.
(Shi Linrong, Wu Jianmin, Sun Wei, et al.Simulation test for metering process of horizontal disc precision metering device based on discrete element method[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE)(S1002-6819), 2014, 30(8): 40-48. (in Chinese with English abstract))
[20] 朱忠祥, 岳小微, 杜岳峰, 等. 玉米果穗剥皮的运动仿真与高速摄像试验[J]. 农业工程学报, 2015, 31(6): 42-48.
(Zhu Zhongxiang, Yue Xiaowei, Du Yuefeng, et al.Dynamic simulation and high-speed photography experiment on corn-ear husking[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE)(S1002-6819), 2015, 31(6): 42-48. (in Chinese with English abstract))
[21] 舒彩霞, 严磊, 李磊, 等. 油菜割晒机液压驱动系统管道设计与仿真优化[J]. 系统仿真学报, 2015, 27(12): 3087-3095.
(Shu Caixia, Yan Lei, Li Lei, et al.Pipeline Design and Simulation Optimization of Hydraulic Driving System for Rape Windrower[J]. Journal of System Simulation (S1004-731X), 2015, 27(12): 3087-3095.)
[22] 兰江, 朱磊, 赵竞全, 基于Flowmaster的多喷嘴引射器建模与仿真[J]. 系统仿真学报, 2016, 28(2): 410-415.
(Lan Jiang, Zhu Lei, Zhao Jingquan.Modeling and Simulation of Multi-nozzle Ejector based on Flowmaster[J]. Journal of System Simulation (S1004-731X), 2016, 28(2): 410-415.)
[23] 欧阳玉平, 洪添胜, 马煜东. 山地果园双轨运输机牵引系统动力学仿真与试验[J]. 系统仿真学报, 2015, 27(7): 1502-1510.
(Ouyang Yuping, Hong Tiansheng, Ma Yudong.Dynamic Simulation and Test of Mountain Orchard Double-track Transport Traction System[J]. Journal of System Simulation (S1004-731X), 2015, 27(7): 1502-1510.)