Deformation Mechanisms in Tool–Workpiece Asperity Contact in Metal Forming

The contribution to frictionFriction stemming from dissipation of plastic energy is studied by numerical simulations and experiments. geometrical setup consists a single model asperity, which first flattened against tool with grooves on smaller length scale. Relative, tangential sliding between the asperity induced subsequently until steady state reached. flank angle varied. Comparison experiments leads validation at low angles, while current implementation cannot handle complicated flow around large angle. At simulated force in agreement when keeping one determined friction factor. This proves that change force, corresponding apparent factor, only due dissipated wavesPlastic waves. validated can be used determine wider range factors for strain hardening materials.