Authors: Jüri Olt; Alexander Liyvapuu; Marten Madissoo; Viacheslav Maksarov
Addresses: Institute of Technology, Estonian University of Life Sciences, r. R. Kreutzwaldi 56, Tartu, Estonia ' Institute of Technology, Estonian University of Life Sciences, r. R. Kreutzwaldi 56, Tartu, Estonia ' Institute of Technology, Estonian University of Life Sciences, r. R. Kreutzwaldi 56, Tartu, Estonia ' Department of Mechanical Engineering, National Mineral Resources University, Vasilevsky Island, 21th Line 2, St. Petersburg, Russia
Abstract: This work examines the simulation of chip formation during the process of cutting. An analysis of complex rheological models enabled a set of assumptions to be considered, thereby substantiating a hypothesis relating to the chip formation process. The studies demonstrated that the chip formation process, taking into account the plastic deformation and destruction of metal in the local zone, is most appropriately represented by a rheological model in the form of a series connection of elastic-ductile-plastic relaxing medium of Ishlinskiy (reflecting the process of primary deformation of metal from the cut off layer) and the medium of Voigt with two elastic-dissipative elements (representing the process of deformation and frictions from the convergent shaving). The attained complex rheological model served as the basis for constructing a representative dynamic model for chip formation process.
Keywords: metal cutting; stress; elastic deformation; plastic deformation; relaxation; rheological modelling; dynamic modelling; simulation; chip formation; friction; rheology.
International Journal of Materials and Product Technology, 2016 Vol.53 No.1, pp.1 - 14
Accepted: 06 May 2015
Published online: 26 Mar 2016 *