| On the instability of chip flow in high-speed machining | |
Ye GG(叶贵根); Jiang MQ(蒋敏强) ; Xue SF; Ma W(马维); Dai LH(戴兰宏)
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| Source Publication | MECHANICS OF MATERIALS |
| 2018 | |
| Pages | 104-119 |
| Conference Name | IUTAM Symposium on Dynamic Instabilities in Solids |
| Conference Date | MAY 17-20, 2016 |
| Conference Place | Madrid, SPAIN |
| Abstract | High cutting speed usually gives rise to a breakdown of steady chip flow and results in a serrated flow pattern, which is one of the most fundamental and challenging problems in metal cutting. Here, we systematically analysed the experimental results of high-speed cutting on various typical metallic materials over wide ranges of cutting speeds. With considering the coupling effects of inertial, tool-chip compression and material convection, the critical condition for the onset of serrated chip flow is determined based on a stability analysis of the deformation inside primary shear zone. It is found that the emergence of the serrated chip flow is dominated by a dimensionless number which characterized the competition among the effects of inertia, thermal softening, strain hardening, elastic unloading, viscous diffusion and thermal diffusion. More interestingly, a power law between the serration frequency and the Reynolds thermal number Pe is clearly revealed. (C) 2017 Elsevier Ltd. All rights reserved. |
| Keyword | High-speed machining Shear banding Serrated chip flow Thermoplastic instability |
| WOS ID | WOS:000419411100009 |
| Funding Organization | NSFC [11472287, 11132011, 11402278, 11572324, 11372315, 11522221]; Key Researh Program of Frontier Sciences [QYZDJSSW-JSC011]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040302]; Fundamental Research Funds for the Central Universities [15CX02110A] |
| Indexed By | CPCI-S |
| Language | 英语 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/78569 |
| Collection | 非线性力学国家重点实验室 流固耦合系统力学重点实验室 |
| Affiliation | 1.{Jiang, M. Q.、Dai, L. H.} Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China 2.{Ye, G. G.、Xue, S. F.} China Univ Petr, Dept Engn Mech, Coll Pipeline & Civil Engn, Qingdao 266580, Shandong, Peoples R China 3.{Jiang, M. Q.、Dai, L. H.} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China 4.{Ma, W.} Chinese Acad Sci, Key Lab Environm Mech, Inst Mech, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Ye GG,Jiang MQ,Xue SF,et al. On the instability of chip flow in high-speed machining[C]MECHANICS OF MATERIALS,2018:104-119. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| IrCp2018036.pdf（4573KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Download | ||
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