Determination of thermal material properties for the numerical simulation of cutting processes

Thermal properties of machined materials, which depend significantly on the change in cutting temperature, have a considerable effect thermal machining characteristics. Therefore, used for numerical simulation process should be determined depending temperature. To determine methodology and software-implemented algorithm were developed their calculation. This is based analytical models determination tangential stress primary zone. Based this experimentally or analytically temperatures, material calculated, namely coefficient heat capacity as well conductivity. Three variants provided determining stress: yield calculated using Johnson-Cook constitutive equation, thrust forces by directly calculating stress. The example three different materials: AISI 1045 4140 steel Ti10V2Fe3Al titanium alloy (Ti-1023). With FE model, deviation between experimental simulated temperature values ranged from approx. 7.5 to 14.4%.