Feasibility investigation of ideal fracture caused by thermal stress

To investigate a new type of low stress precision cropping system, it is necessary to obtain the feasibility that the heat stress was used to prefabricate the ideal crack of V-shaped notch tip. ANSYS software was applied to build the finite element model of the slotted bar and the temperature field and heat stress field were analyzed in detail. The analytical results show that plastic yield occurs in the tip of V-shaped notch of 45 steel bar, 20 steel bar and 60Si2Mn bar under the condition of given parameters, but the heat crack only appears in the tip point of V-shaped notch of 60Si2Mn bar.