Numerical Simulation of High-Speed Orthogonal Cutting of Metals

Abstract:

Processes of high-speed orthogonal cutting of metal workpieces are numerically investigated with modified finite element method in the framework of the elastic-plastic model in the range of cutting speeds 1-200 m/s. To simulate the failure of the material under high-velocity impact, we applied an active-type kinetic model determining the growth of microdamages, which continuously changes the properties of the material and induce the relaxation of stresses. The threshold value of specific energy of shear deformations is used as a criterion of chip separation. Necessity of using an additional criterion of chip formation is revealed, the threshold value of specific volume of microdamages is offered as the additional criterion.

• Periodical: Applied Mechanics and Materials (Volume 756)
• Pages: 513-517
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.756.513
• Online since: April 2015
• Authors: Aleksey S. Zelepugin, Sergey A. Zelepugin
• Keywords: High-Speed Machining, Numerical Simulation, Orthogonal Cutting

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