2012
DOI: 10.1016/j.wear.2011.04.004
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Advanced friction modeling for sheet metal forming

Abstract: The Coulomb friction model is frequently used for sheet metal forming simulations. This model incorporates a constant coefficient of friction and does not take the influence of important parameters such as contact pressure or deformation of the sheet material into account. This article presents a more advanced friction model for large-scale forming simulations based on the surface changes on the micro-scale. When two surfaces are in contact, the surface texture of a material changes due to the combination of n… Show more

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Cited by 99 publications
(62 citation statements)
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References 16 publications
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“…A non-linear plastic load model has been developed inspired by the ideal-plastic load model proposed by Westeneng [4,15]. Besides, Westeneng proposed an ideal-plastic stretching model [4,15] which has been used in this research.…”
Section: Flattening Modelsmentioning
confidence: 99%
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“…A non-linear plastic load model has been developed inspired by the ideal-plastic load model proposed by Westeneng [4,15]. Besides, Westeneng proposed an ideal-plastic stretching model [4,15] which has been used in this research.…”
Section: Flattening Modelsmentioning
confidence: 99%
“…Westeneng [4] extended the model of Challen & Oxley to describe friction conditions between a flat workpiece material and multiple tool asperities. For this purpose, statistical parameters (asperity height distribution, asperity density and mean radii) have been used to make the translation from single asperity scale to multiple asperity scale [15]. However, statistically based contact models tends to lose its applicability under fully plastic contact conditions.…”
Section: Shear Stressesmentioning
confidence: 99%
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“…In this section a brief explanation of the theory will be provided. For a detailed derivation of the following equations, the reader is referred to [4]. The asperities of the rough surface are modeled by bars which can represent arbitrarily shaped asperities.…”
Section: Theoretical Backgroundmentioning
confidence: 99%
“…At the microscopic level, friction is due to adhesion between contacting asperities and the ploughing effects between asperities. The ploughing effects between asperities and adhesion DOI 10.12776 effects between boundary layers are the main factors causing friction in the boundary lubrication regime [12]. In the lubrication regime the contact pressure is carried by the lubricant flow and asperities.…”
Section: Introductionmentioning
confidence: 99%