Modeling periodic adiabatic shear band evolution during high speed machining Ti-6Al-4V alloy

Ye, G.G.; Xue, Sun; Jiang, Mingming; Tong, Xing; Dai, L.H.

doi:10.1016/j.ijplas.2012.07.001

Cited by 123 publications

(59 citation statements)

References 66 publications

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“…10a indicates that the band spacing is approximately constant with respect to the cutting speed (in the range of velocities explored here). This trend is in agreement with experimental results obtained by Calamaz et al [11], Sun et al [7], Sima and Özel [12] and Ye et al [34] which are presented together with numerical results in Fig. 10a.…”

Section: Frequency Of Segmentation and Shear Band Spacingsupporting

confidence: 93%

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Analysis of adiabatic shear banding in orthogonal cutting of Ti alloy

Miguélez¹,

Soldani²,

Molinari³

2013

International Journal of Mechanical Sciences

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This work is focused on the numerical analysis of adiabatic shear banding in orthogonal cutting of Ti6Al4V alloy. Segmented chip results from adiabatic shear banding, depending on the competition of thermal softening and strain and strain rate hardening. The influence of cutting velocity and feed in the chip segmentation is studied. Also the role of friction at the tool-chip interface and the effect of rheological parameters of the constitutive equation are analyzed. Experimental tests obtained from previous work of the authors [Molinari A, Musquar C, Sutter G, Adiabatic shear banding in high speed machining of Ti-6Al-4V experiments and modeling, Int J Plast, vol. 18, 2002, p. 443-459] and others were used as a reference to validate the models. Cutting forces and the mechanism of plastic flow localization are analyzed in terms of frequency of segmentation and shear band width and compared to experimental data.

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Section: Frequency Of Segmentation and Shear Band Spacingsupporting

confidence: 93%

“…10a. Molinari et al [6], Sima and Ozel [12] and Ye et al [34] used a null rake angle. For Sun et al [7] and Calamaz et al [11] the rake angle was equal to 151 and −41, respectively.…”

Section: Frequency Of Segmentation and Shear Band Spacingmentioning

confidence: 99%

Analysis of adiabatic shear banding in orthogonal cutting of Ti alloy

Miguélez¹,

Soldani²,

Molinari³

2013

International Journal of Mechanical Sciences

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“…15a1, the shear stress fluctuates periodically which is the same as the trend of cutting forces in the available experimental measurements [46][47][48]. Moreover, more and more researchers have confirmed that the periodical oscillation is the result of shear band type localized deformation in high-speed machining [26,27,49]. The local temperature rise is about 400 K, but the increment of damage parameter is <0.015 in high-speed FM (Fig.…”

Section: Effect Of Cutting Speed On Hopf Bifurcation In Fmmentioning

confidence: 53%

“…It is demonstrated that serrated chips in HSM are treated as a Hopf bifurcation due to shear banding deformation [10,26,27]. Based on the results from the literature [4,28], temperature in machining increases with the increasing cutting speed and recrystallization happens when the cutting speed exceeds a certain value.…”

Section: Introductionmentioning

confidence: 99%

Suppression of Hopf bifurcation in metal cutting by extrusion machining

et al. 2016

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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 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-softeningtype deformation in low-speed extrusion machining; however, the thermal-softening-type deformation is the primary deformation mode for high-speed extrusion machining.

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“…The investigation of chip morphology, micro-structure, micro-hardness and the finished surface integrity were carried out. Furthermore, they performed the cutting experiments on Ti6Al4V alloy over a wide range of cutting speed [19]. The transition of chip morphology from continuous to serrated was observed with increasing the cutting speeds.…”

Section: Introductionmentioning

confidence: 99%

Modelling of the Relationship of Adiabatic Shear and Cutting Conditions for Higher Cutting Speed Ranges

2017

SV-JME

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Modeling periodic adiabatic shear band evolution during high speed machining Ti-6Al-4V alloy

Cited by 123 publications

References 66 publications

Analysis of adiabatic shear banding in orthogonal cutting of Ti alloy

Analysis of adiabatic shear banding in orthogonal cutting of Ti alloy

Suppression of Hopf bifurcation in metal cutting by extrusion machining

Modelling of the Relationship of Adiabatic Shear and Cutting Conditions for Higher Cutting Speed Ranges

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