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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)
2018
发表期刊MECHANICS OF MATERIALS
卷号116页码:104-119
ISSN0167-6636
摘要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.
关键词High-speed Machining Shear Banding Serrated Chip Flow Thermoplastic Instability
DOI10.1016/j.mechmat.2017.02.006
收录类别SCI ; EI
语种英语
WOS记录号WOS:000419411100009
关键词[WOS]ADIABATIC SHEAR BANDS ; ALUMINUM-ALLOY A2024-T351 ; THERMOMECHANICAL RESPONSE ; CUTTING PROCESS ; STRAIN RATES ; INCONEL 718 ; 1045 STEEL ; LOCALIZATION ; EVOLUTION ; TI-6AL-4V
WOS研究方向Materials Science ; Mechanics
WOS类目Materials Science, Multidisciplinary ; Mechanics
项目资助者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)
论文分区二类
力学所作者排名1
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/72248
专题非线性力学国家重点实验室
推荐引用方式
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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