Simulation of vibration harvesting mechanism for sea buckthorn
Simulation of vibration harvesting mechanism for sea buckthorn
复制标题
沙棘振动采收机构模拟
DOI：
10.1016/j.eaef.2015.08.003
复制
发表时间：
2016
影响因子：
--
通讯作者：
Yongjie Cui
中科院分区：
文献类型：
--
作者：
Qiang Nan;Dongjian He;Yougang Yang;Yongjie Cui
沙棘是一种理想的生态治理植物，在我国西部地区广泛种植。其果实具有很高的营养和药用价值。但由于采收成本高，其经济价值远未得到开发。机械振动是水果分选的可行方法之一。为了设计合理的林木振动收获机，采用有限元方法对SBT振动收获机的振动收获机构进行了仿真分析。首先，利用Pro/E建立了SBT树的三维实体模型，并导入到ANSYS中。其次，进行模态分析，以确定SBT树的固有振动特性，如固有频率和振动模式。最后，谐波响应分析，以确定稳态响应时，正弦负载被添加到SBT树。模态分析结果表明，SBT采油树的前20阶固有频率在6.6 Hz（一阶频率）~ 31.8 Hz（20阶频率）之间变化。谐响应分析结果表明，振动力作用于侧枝比作用于树干更有效，对树木的损伤较小。此外，施加到侧枝的振动力为58 e78 N，频率范围为20至30 Hz，这确保了从树上收获大部分SBT果实。仿真分析结果可为SBT振动收割机的设计和开发提供依据。© 2015亚洲农业与生物工程协会。出版社：Elsevier BV版权所有。
Sea buckthorn (SBT) is an ideal plant for ecological management and thus planted widely in western China. Its fruit is of high nutritional and medicinal values. However, its economic value is far from development because of high cost for harvesting SBT fruits. Mechanical vibration is one of feasible way to make fruit separation. To design proper vibratory harvesters for tree crops, the vibration harvesting mechanism of SBT was simulated and analyzed by the finite element method. First, a three-dimensional solid model of SBT tree was built by Pro/E and imported into ANSYS. Next, modal analysis was performed to determine the natural vibration properties of SBT tree such as the natural frequency and vibration mode. Finally, harmonic response analysis was applied to determine the steady-state response when a sine load was added to the SBT tree. The modal analysis results indicated that the first twenty order natural frequencies of SBT tree varied from 6.6 Hz (the first order frequency) to 31.8 Hz (the twentieth order frequency). Results of harmonic response analysis showed that the application of vibration force to the side branches is effective than to the trunk, with a slight damage to the tree. Moreover, the vibration force applied to the side branches was 58e78 N with a frequencies range of from 20 to 30 Hz, which ensured that the majority of SBT fruits were harvested from the tree. The simulation analysis results obtained in this study could provide a basis for the design and development of SBT vibration harvesters.© 2015 Asian Agricultural and Biological Engineering Association. Published by Elsevier BV All rights reserved.
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影响因子：
8.3
作者：
H. A. Tinoco;D. Ocampo;F. M. Peña;J. Sanz-Uribe
通讯作者：
H. A. Tinoco;D. Ocampo;F. M. Peña;J. Sanz-Uribe
DOI：
--
发表时间：
2000
期刊：
Forestry Studies in China
影响因子：
--
作者：
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通讯作者：
Wu Qinxiao;Zhao Hongyan
影响因子：
8.1
作者：
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通讯作者：
Satya, Santosh
DOI：
--
发表时间：
2012
期刊：
Forestry Machinery and Woodworking Equipment
影响因子：
--
作者：
Li Jian-ping
通讯作者：
Li Jian-ping
影响因子：
15.3
作者：
Yang, BR;Kallio, H
通讯作者：
Kallio, H