Abstract
Thermomechanical processing of metals by cutting is a complicated technological problem that is difficult for mathematical simulation. The various phenomena observed in this process are so closely intertwined with each other and their interaction is so complex that eleven relatively independent theories not coming yet to a holistic unity are focused on the cutter edge. These are a theory of chip formation, metal cutting mechanics, a friction theory in metalworking, thermodynamics of cutting, a theory of wear and resistance of cutting tools.
 A mesh-free method of Smoothed Particle Hydrodynamics (SPH) has been used for simulation in this paper. The SPH-based simulation in LS-DYNA is performed to predict cutting forces and plastic deformations for machining processing of metals by cutting. The results characterizing the distribution patterns of the strain tensor components and the temperature field at different points in time and space have been presented. The performed studies have demonstrated that it is possible to use changes in the temperature fields as a criterion for estimating the elastic-plastic deformations.
Highlights
Thermomechanical processing of metals has been used by man for a long time and will remain the most important production process and in future as well
For the workpiece model (Table 1) of 12.58 mm long, 4.3 mm high and 4 mm wide the Smoothed Particle Hydrodynamics (SPH) particles are arranged in accordance with the object consisting of quadratic cells with an edge length of 0.06 mm
To prevent the model from unrestricted translational motion, the lower row of SPH particles is at room temperature and is fixed to the base
Summary
Thermomechanical processing of metals has been used by man for a long time and will remain the most important production process and in future as well. It is a set of deformation operations of heating and cooling (in different sequences) as a result of which a final structure of the metal alloy surface is formed. Even minor improvements in efficiency and effectiveness of any cutting operation have an influence on a huge amount of applications of this processing. For this reason, mathematical simulation is of great interest to both academia and industry. 95% of the deformation and friction energy are converted into heat that is mainly absorbed by chips 50-86%, a cutter 10-40%, a product under processing 3-9% and about 1% of the heat is radiated in surrounding area [1,2,3]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
