| 水稻谷粒与脱粒元件碰撞过程的接触力学分析 |
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| 引用本文： | 徐立章,李耀明,丁林峰.水稻谷粒与脱粒元件碰撞过程的接触力学分析[J].农业工程学报,2008,24(6):146-149. |
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| 作者姓名： | 徐立章 李耀明 丁林峰 |
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| 作者单位： | 江苏大学现代农业装备与技术省部共建教育部重点实验室/江苏省重点实验室,镇江,212013 |
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| 基金项目： | 国家自然科学基金
,
江苏省高校自然科学基金
,
江苏大学国家重点实验室培育点开发基金 |
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| 摘 要： | 针对中国水稻在机械化收获过程中稻谷损伤严重,脱粒装置的设计仍以经验为主等现状,从碰撞的角度,建立了谷粒与脱粒元件接触过程的位移量和最大压力分布方稃,并以钉齿脱粒滚筒为例,求得了稻谷产生应力裂纹或破碎时稻谷与脱粒元件碰撞的临界相对速度,室内台架试验验证了理论分析的正确性,为深入研究水稻谷粒与脱粒元件的相互作用、稻谷的脱粒损伤机理以及脱粒装置的设计提供了理论依据.
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| 关 键 词： | 水稻 脱粒 碰撞 接触力学 |
| 收稿时间： | 2007/9/18 0:00:00 |
| 修稿时间： | 6/7/2008 12:00:00 AM |
Contacting mechanics analysis during impact process between rice
and threshing component |
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| Xu Lizhang,Li Yaoming,Ding Linfeng.Contacting mechanics analysis during impact process between rice
and threshing component[J].Transactions of the Chinese Society of Agricultural Engineering,2008,24(6):146-149. |
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| Authors: | Xu Lizhang Li Yaoming Ding Linfeng |
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| Abstract: | Rice damage is very serious during harvesting, at the same time the design of the threshing unit mainly depends on experience in our country. And threshing proceeding of rice is a research focus. From impact view, the function of the distance and maximum pressure distribution were made during the collision process between the rice and the threshing component. As parameters such as rectangular protractor, elastic modulus, Poisson's ratio, ultimate strength of spike-tooth and rice, et al, were given, the critical relatively velocity between the rice and the spike-tooth was calculated. The experiments results showed that it were according with the theory analysis. It provided a theoretical foundation for threshing designing in the future. |
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| Keywords: | rice threshing impact contact mechanics |
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