Research on cutting characteristics of fiber bundle with high-speed photography
Research on cutting characteristics of fiber bundle with high-speed photography
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高速摄影纤维束切割特性研究
DOI：
10.25165/j.ijabe.20201303.5677
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发表时间：
2020-06
影响因子：
2.4
通讯作者：
Yongzhen Zhang
中科院分区：
文献类型：
--
作者：
Zhitao He;Huiling Ding;Sanming Du;Zhen Li;Jiangtao Ji;Jian Li;Yongzhen Zhang
在许多领域中，切割都是一个必不可少的复杂过程。高效低耗的切割作业对环境保护和节能具有重要意义。高性能切削件的开发依赖于对切割过程和切割机理的深入了解。本研究开发了一种新型的高速摄影切割试验台，对黄麻纤维束从10 mm/S的准静态切割到0.6-2.4m/S的动态切割进行了切割实验，并用高速相机捕捉到了切割过程。分析表明，在准静态切割之前存在压缩，压缩力与压缩比的关系曲线服从指数函数。切割速度对切割能量有很大影响。由于纤维的弹性变形和摩擦的共同作用，切割能耗不是切割速度的单调函数。在0.6~1.2m/S范围内，由于纤维内摩擦和刀片与纤维之间的摩擦增加，切削能随切割速度的增加而增加。在1.2~1.8m/S范围内，切削能随切削速度的增加而减小，当切削速度超过1.8m/S时，由于弹性变形和摩擦系数的稳定，切削能趋于固定值。从节能的角度来看，在切割纤维束时，过度提高刀片速度是没有意义的。
Cutting is an essential and complicated process in many fields. Efficient and low-consumption cutting operations are of great significance for environmental protection and energy conservation. The development of high performance cutting parts relies on a deep understanding of the cutting process and cutting mechanism. In this research, a new type of cutting test bench with high-speed photography was developed, and the cutting tests were conducted on the jute fiber bundle from quasi-static cutting at 10 mm/s to dynamic cutting in the speed range of 0.6-2.4 m/s. The cutting process was captured by a high-speed camera. Analysis shows that compression exists before quasi-static cutting, and the compression force curve with respect to the compression ratio follows an exponential function. The cutting speed has a significant effect on cutting energy. The cutting energy consumption is not a monotonous function of cutting speed owing to the combined effect of elastic deformation and friction of fibers. The cutting energy increases with increasing cutting speed in the range of 0.6-1.2 m/s due to the increase of the friction within fibers and the friction between the blade and fibers. The cutting energy decreases with increasing cutting speed in the range of 1.2-1.8 m/s, and tends to be a fixed value when the cutting speed exceeds 1.8 m/s due to the stabilized elastic deformation and friction coefficient. From the perspective of energy saving, it is meaningless to increase the blade speed excessively when cutting fiber bundles.
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DOI：
10.25165/ijabe.v11i3.3969
发表时间：
2018-06
影响因子：
2.4
作者：
Xin Jin;Daoyi Li;Ma Hao;Jiangtao Ji;Zhao Kaixuan;Pang Jing
通讯作者：
Xin Jin;Daoyi Li;Ma Hao;Jiangtao Ji;Zhao Kaixuan;Pang Jing
DOI：
--
发表时间：
2014
期刊：
--
影响因子：
--
作者：
R. Berzins;A. Kakitis;U. Bērziņš;J. Čukurs
通讯作者：
R. Berzins;A. Kakitis;U. Bērziņš;J. Čukurs
DOI：
--
发表时间：
2005-12
期刊：
Agricultural Engineering International: The CIGR Journal
影响因子：
--
作者：
Y. D. Yiljep;U. Mohammed
通讯作者：
Y. D. Yiljep;U. Mohammed
影响因子：
1.5
作者：
M. T. Ige;M. F. Finner
通讯作者：
M. T. Ige;M. F. Finner
影响因子：
5.1
作者：
Igathinathane, C.;Womac, A. R.;Sokhansanj, S.
通讯作者：
Sokhansanj, S.