Strain Rate of Metal Deformation in the Machining Process from a Fluid Flow Perspective
Metal cutting speeds are getting faster with the development of high-speed cutting technology, and with the increase in cutting speed, the strain rate will become larger, which makes the study of the metal cutting process more inconvenient. At the same time, with the increase in strain rate, the dis...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/9/3057 |
| _version_ | 1797569481335111680 |
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| author | Keguo Zhang Keyi Wang Zhanqiang Liu Xiaodong Xu |
| author_facet | Keguo Zhang Keyi Wang Zhanqiang Liu Xiaodong Xu |
| author_sort | Keguo Zhang |
| collection | DOAJ |
| description | Metal cutting speeds are getting faster with the development of high-speed cutting technology, and with the increase in cutting speed, the strain rate will become larger, which makes the study of the metal cutting process more inconvenient. At the same time, with the increase in strain rate, the dislocation movement controlling the plastic deformation mechanism of metal will change from thermal activation to a damping mechanism, which makes the metal deformation behave more like a fluid. Therefore, it is necessary to explore new ways of studying machining from the perspective of fluid flow. Based on this, a fluid model of the metal cutting process is established, and a method for calculating the strain rate is proposed from the point of view of flow. The results of the simulation and measurements are compared and analyzed. The results show that the strain rate on the rake face will be affected by the friction between the chip and tool; the nearer the distance between the chip layer and tool rake face, the bigger the strain rate will be. The strain rate in the central shear plane is much larger than in other areas along the shear plane direction, and in which two ends are the biggest. It can achieve rougher, quantitative research. This shows it is feasible to study machining from the viewpoint of fluid flow, though it still needs a lot of theoretical support and experimental confirmation. |
| first_indexed | 2024-03-10T20:11:17Z |
| format | Article |
| id | doaj.art-445120662567489ca7eb99b10fda8b92 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T20:11:17Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-445120662567489ca7eb99b10fda8b922023-11-19T22:53:00ZengMDPI AGApplied Sciences2076-34172020-04-01109305710.3390/app10093057Strain Rate of Metal Deformation in the Machining Process from a Fluid Flow PerspectiveKeguo Zhang0Keyi Wang1Zhanqiang Liu2Xiaodong Xu3School of Mechanical, Electrical and Information Engineering, Shandong University, Weihai 264209, ChinaSchool of Mechanical, Electrical and Information Engineering, Shandong University, Weihai 264209, ChinaKey Laboratory of High Efficiency and Clean Mechanical Manufacture, Shandong University, Ministry of Education, Jinan 250061, ChinaSchool of Mechanical, Electrical and Information Engineering, Shandong University, Weihai 264209, ChinaMetal cutting speeds are getting faster with the development of high-speed cutting technology, and with the increase in cutting speed, the strain rate will become larger, which makes the study of the metal cutting process more inconvenient. At the same time, with the increase in strain rate, the dislocation movement controlling the plastic deformation mechanism of metal will change from thermal activation to a damping mechanism, which makes the metal deformation behave more like a fluid. Therefore, it is necessary to explore new ways of studying machining from the perspective of fluid flow. Based on this, a fluid model of the metal cutting process is established, and a method for calculating the strain rate is proposed from the point of view of flow. The results of the simulation and measurements are compared and analyzed. The results show that the strain rate on the rake face will be affected by the friction between the chip and tool; the nearer the distance between the chip layer and tool rake face, the bigger the strain rate will be. The strain rate in the central shear plane is much larger than in other areas along the shear plane direction, and in which two ends are the biggest. It can achieve rougher, quantitative research. This shows it is feasible to study machining from the viewpoint of fluid flow, though it still needs a lot of theoretical support and experimental confirmation.https://www.mdpi.com/2076-3417/10/9/3057machiningdislocationstrain ratesfluid flowdeformation mechanism |
| spellingShingle | Keguo Zhang Keyi Wang Zhanqiang Liu Xiaodong Xu Strain Rate of Metal Deformation in the Machining Process from a Fluid Flow Perspective Applied Sciences machining dislocation strain rates fluid flow deformation mechanism |
| title | Strain Rate of Metal Deformation in the Machining Process from a Fluid Flow Perspective |
| title_full | Strain Rate of Metal Deformation in the Machining Process from a Fluid Flow Perspective |
| title_fullStr | Strain Rate of Metal Deformation in the Machining Process from a Fluid Flow Perspective |
| title_full_unstemmed | Strain Rate of Metal Deformation in the Machining Process from a Fluid Flow Perspective |
| title_short | Strain Rate of Metal Deformation in the Machining Process from a Fluid Flow Perspective |
| title_sort | strain rate of metal deformation in the machining process from a fluid flow perspective |
| topic | machining dislocation strain rates fluid flow deformation mechanism |
| url | https://www.mdpi.com/2076-3417/10/9/3057 |
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