| 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
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| 2018 | |
| Volume | 116Pages:104-119 |
| ISSN | 0167-6636 |
| 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 |
| DOI | 10.1016/j.mechmat.2017.02.006 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000419411100009 |
| WOS Keyword | ADIABATIC SHEAR BANDS ; ALUMINUM-ALLOY A2024-T351 ; THERMOMECHANICAL RESPONSE ; CUTTING PROCESS ; STRAIN RATES ; INCONEL 718 ; 1045 STEEL ; LOCALIZATION ; EVOLUTION ; TI-6AL-4V |
| WOS Research Area | Materials Science ; Mechanics |
| WOS Subject | Materials Science, Multidisciplinary ; Mechanics |
| Funding Organization | NSFC(11472287 ; 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) ; 11132011 ; 11402278 ; 11572324 ; 11372315 ; 11522221) |
| Classification | 二类 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/72248 |
| Collection | 非线性力学国家重点实验室 |
| Recommended Citation GB/T 7714 | Ye GG,Jiang MQ,Xue SF,et al. On the instability of chip flow in high-speed machining[J]. MECHANICS OF MATERIALS,2018,116:104-119. |
| APA | 叶贵根,蒋敏强,Xue SF,马维,&戴兰宏.(2018).On the instability of chip flow in high-speed machining.MECHANICS OF MATERIALS,116,104-119. |
| MLA | 叶贵根,et al."On the instability of chip flow in high-speed machining".MECHANICS OF MATERIALS 116(2018):104-119. |
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| File Name/Size | DocType | Version | Access | License | ||
| Jp-2018-019.pdf（4573KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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