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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)
Source PublicationMECHANICS OF MATERIALS
2018
Volume116Pages:104-119
ISSN0167-6636
AbstractHigh 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.
KeywordHigh-speed Machining Shear Banding Serrated Chip Flow Thermoplastic Instability
DOI10.1016/j.mechmat.2017.02.006
Indexed BySCI ; EI
Language英语
WOS IDWOS:000419411100009
WOS KeywordADIABATIC SHEAR BANDS ; ALUMINUM-ALLOY A2024-T351 ; THERMOMECHANICAL RESPONSE ; CUTTING PROCESS ; STRAIN RATES ; INCONEL 718 ; 1045 STEEL ; LOCALIZATION ; EVOLUTION ; TI-6AL-4V
WOS Research AreaMaterials Science ; Mechanics
WOS SubjectMaterials Science, Multidisciplinary ; Mechanics
Funding OrganizationNSFC(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
Ranking1
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Document Type期刊论文
Identifierhttp://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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