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Suppression of Hopf bifurcation in metal cutting by extrusion machining
Liu Y; Cai SL; Shang XC; Dai LH(戴兰宏); Cai, SL; Dai, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Source PublicationNONLINEAR DYNAMICS
2017-04-01
Volume88Issue:1Pages:433-453
ISSN0924-090X
AbstractHopf bifurcation is a common phenomenon during the metal cutting process which results in poor surface finish of the workpiece and inhomogeneous grain structure in materials. Therefore understanding and controlling Hopf bifurcation in metal cutting are necessary. In this work the systematic low-speed extrusion machining experiments were conducted to suppress Hopf bifurcation phenomenon. It is found that the suppression of Hopf bifurcation is achieved with the increasing constraint extrusion degree. In order to reveal the mechanism of the suppression of Hopf bifurcation a new nonlinear dynamic model for extrusion machining is developed where the convection the diffusion the extrusion of constraint the thermal-softening deformation and the fracture-type damage are included. The theoretical predictions are in agreement with the experimental results; therefore the present theoretical model is effective to characterize the suppression of Hopf bifurcation in metal cutting. Based on the numerical calculation of the theoretical model the mechanisms underlying in extrusion machining are further revealed: Fracture-type deformation is more important than the thermal-softening-type deformation in low-speed extrusion machining; however the thermal-softening-type deformation is the primary deformation mode for high-speed extrusion machining.
KeywordHopf Bifurcation Metal Cutting Bifurcation Suppression Nonlinear Dynamic Model
DOI10.1007/s11071-016-3251-x
Indexed BySCI ; EI
Language英语
WOS IDWOS:000397829200026
WOS KeywordCHIP FORMATION ; SHEAR-BAND ; NONLINEAR DYNAMICS ; SPEED ; FLOW ; INSTABILITY ; TI-6AL-4V ; EVOLUTION ; TITANIUM ; SYSTEMS
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
Funding OrganizationNational Natural Science Foundation of China(11132011 ; Fundamental Research Funds for the Central Universities(FRF-TP-15-101A1) ; Opening Fund of State Key Laboratory of Nonlinear Mechanics China Postdoctoral Science Foundation(2016M591066) ; National Basic Research Program of China(2012CB937500) ; CAS/SAFEA International Partnership Program for Creative Research Teams ; 11602236)
DepartmentLNM冲击动力学与新型材料力学性能
Classification一类
Ranking1
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60569
Collection非线性力学国家重点实验室
Corresponding AuthorCai, SL; Dai, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Liu Y,Cai SL,Shang XC,et al. Suppression of Hopf bifurcation in metal cutting by extrusion machining[J]. NONLINEAR DYNAMICS,2017,88(1):433-453.
APA Liu Y,Cai SL,Shang XC,戴兰宏,Cai, SL,&Dai, LH .(2017).Suppression of Hopf bifurcation in metal cutting by extrusion machining.NONLINEAR DYNAMICS,88(1),433-453.
MLA Liu Y,et al."Suppression of Hopf bifurcation in metal cutting by extrusion machining".NONLINEAR DYNAMICS 88.1(2017):433-453.
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