Suppression of Hopf bifurcation in metal cutting by extrusion machining

doi:10.1007/s11071-016-3251-x

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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.
发表期刊	NONLINEAR DYNAMICS
	2017-04-01
卷号	88 期号:1 页码:433-453
ISSN	0924-090X
摘要	Hopf 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.
关键词	Hopf Bifurcation Metal Cutting Bifurcation Suppression Nonlinear Dynamic Model
DOI	10.1007/s11071-016-3251-x
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000397829200026
关键词[WOS]	CHIP FORMATION ; SHEAR-BAND ; NONLINEAR DYNAMICS ; SPEED ; FLOW ; INSTABILITY ; TI-6AL-4V ; EVOLUTION ; TITANIUM ; SYSTEMS
WOS研究方向	Engineering ; Mechanics
WOS类目	Engineering, Mechanical ; Mechanics
项目资助者	National 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)
课题组名称	LNM冲击动力学与新型材料力学性能
论文分区	一类
力学所作者排名	1
引用统计	被引频次：5[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/311007/60569
专题	非线性力学国家重点实验室
通讯作者	Cai, SL; Dai, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
推荐引用方式 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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