A critical analysis on the friction modelling in orthogonal machining

Filice, Luigino; Micari, F.; Rizzuti, Sergio; Umbrello, Domenico

doi:10.1016/j.ijmachtools.2006.05.007

Cited by 149 publications

(64 citation statements)

References 7 publications

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“…Filice et al [80] showed that, when the friction factor m is varied between 0.2 and 0.8, the simulated outputs in the orthogonal cutting of AISI 1045 steel are practically insensitive to the friction model used.…”

Section: Friction Effects In Fe Modelling Of Machiningmentioning

confidence: 99%

Advances in material and friction data for modelling of metal machining

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Section: Friction Effects In Fe Modelling Of Machiningmentioning

confidence: 99%

Advances in material and friction data for modelling of metal machining

et al. 2017

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“…In machining, the contact problem is generally modeled with phenomenological laws that include sticking and sliding contact regimes [12][13][14][15][16][17][18]. Important features of dry contact can be captured by using the Coulomb friction law.…”

Section: Introductionmentioning

confidence: 99%

Numerical and analytical modeling of orthogonal cutting: The link between local variables and global contact characteristics

Molinari

Cheriguene

Miguélez

2011

International Journal of Mechanical Sciences

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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 response of the tool-chip interface is characterized in the orthogonal cutting process by numerical and analytical means and compared to experimental results. We study the link between local parameters (chip temperature, sliding friction coefficient, tool geometry) and overall friction characteristics depicting the global response of the tool-chip interface. Sticking and sliding contact regimes are described. The overall friction characteristics of the tool are represented by two quantities: (i) the mean friction coefficient qualifies the global response of the tool rake face (tool edge excluded) and (ii) the apparent friction coefficient reflects the overall response of the entire tool face, the effect of the edge radius being included. When sticking contact is dominant the mean friction coefficient is shown to be essentially the ratio of the average shear flow stress along the sticking zone by the average normal stress along the contact zone. The dependence of overall friction characteristics is analyzed with respect to tool geometry and cutting conditions. The differences between mean friction and apparent friction are quantified. It is demonstrated that the evolutions of the apparent and of the mean friction coefficients are essentially controlled by thermal effects. Constitutive relationships are proposed which depict the overall friction characteristics as functions of the maximum chip temperature along the rake face. This approach offers a simple way for describing the effect of cutting conditions on the tool-chip interface response. Finally, the contact length and contact forces are analyzed. Throughout the paper, the consistency between numerical, analytical and experimental results is systematically checked.

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“…He concluded that the models with a variable friction coefficient along the tool rake face deduced from the normal and frictional stresses experimentally measured, gave the best predictions. More recently, Filice et al [32] also analysed the influence of different friction models on the results of numerical machining simulations. They concluded that for the studied workpiece/tool couple, most mechanical results are not influenced by the friction model except the temperature at the tool-chip interface.…”

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A new material model for 2D numerical simulation of serrated chip formation when machining titanium alloy Ti–6Al–4V

Calamaz

Coupard

Girot

2008

International Journal of Machine Tools and Manufacture

524

314

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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. AbstractA new material constitutive law is implemented in a 2D finite element model to analyse the chip formation and shear localisation when machining titanium alloys. The numerical simulations use a commercial finite element software (FORGE 2005 s ) able to solve complex thermo-mechanical problems. One of the main machining characteristics of titanium alloys is to produce segmented chips for a wide range of cutting speeds and feeds. The present study assumes that the chip segmentation is only induced by adiabatic shear banding, without material failure in the primary shear zone. The new developed model takes into account the influence of strain, strain rate and temperature on the flow stress and also introduces a strain softening effect. The tool chip friction is managed by a combined Coulomb-Tresca friction law. The influence of two different strain softening levels and machining parameters on the cutting forces and chip morphology has been studied. Chip morphology, cutting and feed forces predicted by numerical simulations are compared with experimental results.

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A critical analysis on the friction modelling in orthogonal machining

Cited by 149 publications

References 7 publications

Advances in material and friction data for modelling of metal machining

Advances in material and friction data for modelling of metal machining

Numerical and analytical modeling of orthogonal cutting: The link between local variables and global contact characteristics

A new material model for 2D numerical simulation of serrated chip formation when machining titanium alloy Ti–6Al–4V

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