Usage of 3D roughness parameters adapted to the experimental simulation of sheet-tool contact during a drawing operation

Raharijaona, F; Roizard, Xavier; Stebut, J. von

doi:10.1016/s0301-679x(99)00019-5

Cited by 8 publications

(5 citation statements)

References 6 publications

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“…This is experimentally observed [8,9]. It enables us to consider a representative part of the whole surface, applying symmetry conditions on the sides.…”

Section: Mechanical Modelmentioning

confidence: 95%

“…In all numerical examples mentioned above rough surfaces are modelled, in order to show the influence of different roughness properties on the normal compliance law. Now we shall consider a rough surface, obtained by experimental measurements, published in [8]. The initial FE mesh Table 3 Isotropic and anisotropic non-local friction is shown in Fig.…”

Section: Numerical Simulationmentioning

confidence: 99%

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Influence of surface roughness on friction during metal forming processes

Mahrenholtz

Bontcheva

Iankov

2005

Journal of Materials Processing Technology

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“…This is experimentally observed [8,9]. It enables us to consider a representative part of the whole surface, applying symmetry conditions on the sides.…”

Section: Mechanical Modelmentioning

confidence: 95%

Section: Numerical Simulationmentioning

confidence: 99%

Influence of surface roughness on friction during metal forming processes

Mahrenholtz

Bontcheva

Iankov

2005

Journal of Materials Processing Technology

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“…It is defined as the mean value of the levelling depths of five sampling areas. R pm quantifies the empty volume identical to the average peak height [4]. It gives reliable information on the functionality and surface shape.…”

Section: 16mentioning

confidence: 99%

“…This parameter is useful in the case of bearing and sliding faces, force-fit surfaces, measuring faces etc. Some authors [4] prefer R tm instead of R a since this parameter is not affected by the displacement of the mean line owing to the flattening of the surface roughness after friction. The well-known standard two-dimensional parameters (the R k parameter set) [5] for characterizing the functional properties are not included in the set of three-dimensional primary parameters [1].…”

Section: 17mentioning

confidence: 99%

Characterization of surface topography by confocal microscopy: II. The micro and macro surface irregularities

Udupa¹,

Singaperumal²,

Sirohi³

et al. 2000

Meas. Sci. Technol.

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In part I, considering the autofocus and intensity methods of measurement, the principles and performance of a confocal microscope were discussed. In this part, the details of the experiments, conducted to measure and assess micro and macro surface irregularities of various machined planar and cylindrical surfaces, using a confocal scanning optical microscope (CSOM) are described. The three-dimensional surface topographies of various machined planar surfaces and also the form errors, like roundness and cylindricity, are measured and analysed. The significance of the set of new parameters, proposed for characterizing three-dimensional surface roughness and roundness measurements, is indicated. The effect of filtering on the variation in values of three-dimensional surface-topography parameters is studied. The performance of the CSOM is compared with those of conventional stylus and interferometric methods. The system is shown to have a great number of advantages in terms of three-dimensional surface mapping of planar and cylindrical surfaces and recognition of details and analysis for characterization of surfaces.

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“…As a result, a lower CoF could be achieved by using EDT [9,10]. From a microscopic scale point of view, the characterization of the asperities and valleys on the die and workpiece surfaces could provide more reasonable expiations for many tribological phenomena in sheet metal forming [11]. For a given tool, sheet material, and surface finish, the friction is also affected by rolling direction of the sheet, sliding direction of the contacts [9] and the contact pressure as well as relative velocity and interface temperature [12].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Lubricants for Stamping of Al 5182-O Aluminum Sheet Using Cup Drawing Test

Mao

Malpica

et al. 2015

Journal of Manufacturing Science and Engineering

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Lubricants are necessary to avoid adhesion, galling, and scratching in aluminum stamping processes. In this study, various lubricants, including dry lubes and wet lubes, were evaluated using cup drawing test (CDT) for stamping of Al 5182-O aluminum sheets. The effects of surface texturing, with electro-discharge texturing (EDT) and mill finish (MF), on the friction behavior were also investigated. Furthermore, the methodology to evaluate the performance of lubricants was established based on (a) maximum applicable blank holder force (BHF) and (b) draw-in length in flange or flange perimeter of formed cups. Finite element (FE) simulations were carried out to determine the coefficient of friction (CoF) at tool–workpiece interface during deep drawing under different lubrication conditions. Flow stress data of Al 5182-O material were obtained using viscous pressure bulge (VPB) and tensile tests. In this study, it was confirmed that, in forming Al 5182-O, dry film lubricants have better lubricity than wet lubricants. A better lubrication condition was found with EDT surface texture.

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Usage of 3D roughness parameters adapted to the experimental simulation of sheet-tool contact during a drawing operation

Cited by 8 publications

References 6 publications

Influence of surface roughness on friction during metal forming processes

Influence of surface roughness on friction during metal forming processes

Characterization of surface topography by confocal microscopy: II. The micro and macro surface irregularities

Evaluation of Lubricants for Stamping of Al 5182-O Aluminum Sheet Using Cup Drawing Test

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