The influence of friction models on finite element simulations of machining

Özel, Tuğrul

doi:10.1016/j.ijmachtools.2005.07.001

Cited by 324 publications

(167 citation statements)

References 36 publications

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“…These interactions result from the balance of the three conservation equations solved in SPH (mass, momentum and energy). It is very interesting because the Coulomb friction parameter is often used in FEM to adjust predicted cutting forces with the experimental results [9,18]. The results of the (LS-DYNA) SPH model were compared with experimental data in [12].…”

Section: Basic Principles Of the Sph Methodsmentioning

confidence: 99%

“…Indeed, the calculated cutting forces are highly dependent on the friction parameter [18]. Because of its simplicity, the Coulomb model is widely used in classical cutting models.…”

Section: Cutting Forcesmentioning

confidence: 99%

“…Because of its simplicity, the Coulomb model is widely used in classical cutting models. Nevertheless as it should be an input in the models, it is often used in order to adjust the cutting forces obtained by FEM with those from the experimental results [9,18]. On the contrary, SPH friction modelling is based on particles interactions and no friction parameter (like Coulomb parameter) has to be defined.…”

Section: Cutting Forcesmentioning

confidence: 99%

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Toward a better understanding of tool wear effect through a comparison between experiments and SPH numerical modelling of machining hard materials

Calamaz

Limido

Nouari

et al. 2009

International Journal of Refractory Metals and Hard Materials

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. The aim of this study is to improve the general understanding of tungsten carbide (WC-Co) tool wear under dry machining of the hard-to-cut titanium alloy Ti6Al4V. The chosen approach includes experimental and numerical tests. The experimental part is designed to identify wear mechanisms using cutting force measurements, scanning electron microscope observations and optical profilometer analysis. Machining tests were conducted in the orthogonal cutting framework and showed a strong evolution of the cutting forces and the chip profiles with tool wear. Then, a numerical method has been used in order to model the machining process with both new and worn tools. The use of smoothed particle hydrodynamics model (SPH model) as a numerical tool for a better understanding of the chip formation with worn tools is a key aspect of this work. The predicted chip morphology and the cutting force evolution with respect to the tool wear are qualitatively compared with experimental trends. The chip formation mechanisms during dry cutting process are shown to be quite dependent from the worn tool geometry. These mechanisms explain the high variation of the experimental and numerical feed force between new and worn tools.

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Section: Basic Principles Of the Sph Methodsmentioning

confidence: 99%

“…Indeed, the calculated cutting forces are highly dependent on the friction parameter [18]. Because of its simplicity, the Coulomb model is widely used in classical cutting models.…”

Section: Cutting Forcesmentioning

confidence: 99%

Section: Cutting Forcesmentioning

confidence: 99%

See 1 more Smart Citation

Toward a better understanding of tool wear effect through a comparison between experiments and SPH numerical modelling of machining hard materials

Calamaz

Limido

Nouari

et al. 2009

International Journal of Refractory Metals and Hard Materials

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show abstract

“…Ozel (2006) demonstrated the importance of various friction definitions on the simulation outputs. In this study, friction is modeled by using the friction window technique as shown in Fig.…”

Section: Finite Element Simulation Modelmentioning

confidence: 99%

Temperature dependent flow softening of titanium alloy Ti6Al4V: An investigation using finite element simulation of machining

Karpat

2011

Journal of Materials Processing Technology

134

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a b s t r a c tTitanium alloy Ti6Al4V is the most commonly used titanium alloy in the aerospace and medical device industries due to its superior properties. There has been a considerable amount of research to better understand the serrated chip formation mechanism of titanium alloy Ti6Al4V by using finite element simulation of machining. An accurate representation of the behavior of the material is important in order to obtain reliable results from the finite element simulation. Flow softening behavior has been integrated into the material constitutive models to simulate adiabatic shear bands and serrated chips. Flow softening is usually related to the dynamic recrystallization phenomenon which initiates after a critical temperature. The aim of this study is to investigate the influence of various flow softening conditions on the finite element simulation outputs for machining titanium alloy Ti6Al4V. For this purpose, a new flow softening expression, which allows defining temperature-dependent flow softening behavior, is proposed and integrated into the material constitutive model. The influence of flow softening below the critical temperature, as adopted in recent studies, is also investigated. Various temperature-dependent flow softening scenarios are tested using finite element simulations, and the results are compared with experimental data from the literature. The results showed that the flow softening initiating around 350-500• C combined with appropriate softening parameters yields simulation outputs that agree well with the experimental measurements.

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“…The influence of work material flow stress upon FE simulations may be less or even none when there is a constitutive model for work material that is obtained empirically from high-strain rate and temperature deformation tests [7]. Johnson-Cook material model [8] is most commonly used model to represent the thermo-viscoplastic behavior of workpiece material.…”

Section: Introductionmentioning

confidence: 99%

Verification of Johnson-Cook Material Model Constants of Aa2024-T3 for Use in Finite Element Simulation of Friction Stir Welding and Its Utilization in Severe Plastic Deformation Process Modelling

Sanjeev¹,

Malik²,

Hebbar³

2014

IJRET

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The influence of friction models on finite element simulations of machining

Cited by 324 publications

References 36 publications

Toward a better understanding of tool wear effect through a comparison between experiments and SPH numerical modelling of machining hard materials

Toward a better understanding of tool wear effect through a comparison between experiments and SPH numerical modelling of machining hard materials

Temperature dependent flow softening of titanium alloy Ti6Al4V: An investigation using finite element simulation of machining

Verification of Johnson-Cook Material Model Constants of Aa2024-T3 for Use in Finite Element Simulation of Friction Stir Welding and Its Utilization in Severe Plastic Deformation Process Modelling

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