Obrabotka Metallov 2014 No. 3

ОБРАБОТКА МЕТАЛЛОВ № 3 (64) 2014 89 ТЕХНОЛОГИЯ Abstract The instrument of technological inheritance mechanics is developed to design strengthening technological processes, providing specified operation characteristics of machine parts. The key issue, that determinate the accuracy of the developed technological solutions, is the adequacy of calculating the mechanical state in the deformation actual processes that occur in the metal surface layer during processing. The traditional approach to solving the problems of contact interaction of the workpiece and the tool has several drawbacks that lead to the possibility of significant errors in the calculation. An approach to the solution of the contact problem by incorporating a system of equations of the finite element approximation of the contact surface is offered in the paper. An example of the calculation in the elastic formulation for linear triangular element is given. It is noted that the proposed solution has a number of advantages in comparison with a solution that can be obtained using commercial CAE-systems that use the finite element method to calculate the stress-strain state. Keywords: мechanics of technological inheritance, hardening processes, machining simulation, finite element method, contact problem References 1. Blyumenshtein V.Yu., Smelyanskii V.M. Mekhanika tekhnologicheskogo nasledovaniya na stadiyakh obrabotki i ekspluatatsii detalei mashin [Mechanics of technological inheritance on stages of processing and operation of machine parts]. Moscow, Mashinostroenie-1 Publ., 2007, 400 p. 2. Krechetov A.A., Miroshin I.V. Modelirovanie protsessov obrabotki detalei rezaniem i poverkhnostnym plasticheskim deformirovaniem [Modeling of parts machining during cutting and surface plastic deformation]. Uprochnyayushchie tekhnologii i pokrytiya – Hardening technology and coatings , 2010, no. 10, pp. 14-19. 3. Krechetov A.A. Metodika rascheta parametrov mekhanicheskogo sostoyaniya poverkhnostnogo sloya detalei mashin [Method of calculating the parameters of the mechanical state of the surface layer of machine parts]. Vestnik KuzGTU – Bulletin Kuzbass State Technical University , 2001, no. 5, pp. 27-31. 4. KaplunA.B., Morozov E.M., Olfer’eva M.A. ANSYS v rukakh inzhenera: Prakticheskoe rukovodstvo [ANSYS in the hands of the engineer. A Practical Guide]. Moscow, Editorial URSS Publ., 2003. 272 p. 5. Zenkevich O. Metod konechnykh elementov v tekhnike [A finite element method in the technique]. Moscow, Mir Publ., 1975. 541 p. 6. Kolmogorov V.L. Napryazheniya, deformatsii, razrushenie [Stress, deformation, fracture]. Moscow, Metallurgiya Publ., 1970. 229 p. 7. Rabotnov Yu.N. Soprotivlenie materialov [Strength of materials]. Moscow, Fizmatgiz Publ., 1962. 456 p. Received 23 July 2014 Revised 21 August 2014 Accepted 29 August 2014