Methods of determination of frictional resistances in sheet metal forming of car body sheets

  • Tomasz Trzepieciński Rzeszow University of Technology
  • Irena Nowotyńska Rzeszow University of Technology
Keywords: frictional resistances, sheet metal, car body


The friction phenomenon existed in almost all plastic working processes, in particular sheet metal forming, is a complex function of the material's properties, parameters of the forming process, surface topography of the sheet and tools, and lubrication conditions. During the stamping of the drawpieces there are zones differentiated in terms of stress and strain state, displacement speed and friction conditions. This article describes the methods for determining the value of the coefficient of friction in selected areas of sheet metal and presents the drawbacks and limitations of these methods.


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