SIMULATION OF PARAMETERS OF CYLINDER CONTACT AREA WHEN CLADDING WITH FLEXIBLE TOOL

The paper considers new effective high production method of combined treatment of surfaces of machine industry goods using cladding with a flexible tool (CFT). As a rule, a wire wheel brush is used as such flexible tool. CFT is a combined method of modifying the surface of treated item involving the simultaneous deformational strengthening of surface and applying of coatings made of various materials with required functional properties. The paper presents the mathematical model of determining the geometry and energy parameters of the contact area when using cladding of cylindrical surfaces of treated items with a wire tool. The model is designed using the elliptic parameters method of the elastic rods theory. The model is based on the algorithm of the computational and analytical method containing the cycle of simultaneous selection of the angle identifying the position of a flexible element in the contact area and the modular angle the input parameter of which is the ordinate of the contact point in the fixed system of reference.

The paper presents the analysis of the stressed state of wire tool bristles, which is the basic element of cladding assemblies. The authors considered the influence of wire tool design parameters and the cladding modes on the values of maximum actual stresses that occur in the bristles when sliding along the area of contact with the treated item. The paper presents the results of modeling of the stressed state of the wire tool bristles in the program implementing the method of finite element analysis and their comparative analysis with the results of calculation using the analytical method. Maximum discrepancy between the stress values calculated according to the proposed mathematical model and obtained using CAE-analysis was 12 %.