Irkutsk National Research Technical University, Irkutsk, Russia:

S. A. Zaides, Dr. Eng., Prof., Dept. of Materials Science, Welding and Additive Technologies, e-mail: zsa@istu.edu
Ho Ming Quan, Postgraduate Student, Dept. of Materials Science, Welding and Additive Technologies, e-mail: minhquanho2605@gmail.com

Using computer simulation Ansys 19.1, calculations were made to determine the size of an elastoplastic wave depending on the technological parameters of the pendulum SPD process, as well as on the geometric shape and dimensions of the sectorial working tool. The influence of the physical and mechanical properties of the material on the linear dimensions of the wave is presented. An estimate of the stress-strain state in elastoplastic waves generated in the direction of the main movement (B) and in the direction of feed (B') is given. The results of computer modeling and calculations show that under the same hardening conditions, the dimensions of the wave (B') in the feed direction are greater than the dimensions of the wave (B) in the direction of the main movement according to the following ratio: h' = (1.56…1, 72)h; l' = (1.64…1.75)l. The linear dimensions of elastoplastic waves reach a maximum at an interference fit of t = 0.5–0.6 mm. With an increase in the sectorial and working radii of the tool, the dimensions of the wave fit by increasing the contact area. The dimensions of the wave in the direction of the main movement are influenced mainly by the technological parameters that characterize the kinematics of the working tool (the frequency of the pendulum movement and the angular amplitude of the working tool). These parameters practically do not affect the change in the size of the wave (B') in the feed direction. The law of change in the geometric shape of the wave depending on the physical and mechanical properties of the material is revealed: Large sizes of waves during elastic-plastic deformation are formed in a metal with a reduced yield strength and modulus of elasticity. The resulting stress state of the wave allows us to conclude that maximum tensile stresses are formed at their tops, the value of which reaches 45-60 MPa (10–13 times less than the strength limit of the material), which practically does not cause a violation of the strength of the hardened surfaces.

1. Ning Nie, Lihong Su, Guanyu Deng, Huijun Li, Hailiang Yu, Anh Kiet Tieu. A review on plastic deformation induced surface/interface roughening of sheet metallic materials. Journal of Materials Research and Technology. 2021. Vol. 15. pp. 6574–6607.
2. Chi Ma, Suslov S., Chang Ye, Yalin Dong. Improving plasticity of metallic glass by electropulsing-assisted surface severe plastic deformation. Materials & Design. 2019. Vol. 165.
3. Drozd М. S., Matlin М. М., Sidyakin Yu. I. Engineering calculations of elastic-plastic contact deformation. Moscow: Mashinostroenie, 1986. 221 p.
4. Smolenskiy V. М. Mechanics of hardening parts by surface plastic deformation. Moscow: Mashinostroenie, 2002. 300 p.
5. Zaides S. А. Embracing surface plastic deformation. Irkutsk: Izdatelstvo IrGTU, 2001. 309 p.
6. Rozenberg А. М., Rozenberg О. А. Mechanics of plastic deformation in processes of cutting and deforming drawing. Kiev: Naukova Dumka, 1990. 320 p.
7. Zaides S. А., Isaev А. N. Technological mechanics of axisymmetric deformation. Irkutsk: Izdatelstvo IrGTU, 2007. 432 p.
8. Zaides S. A., Kho Min Kuan. Method for surface-plastic deformation of the external surface of the part in the form of a rotation body. Patent RF, No. 2757643. Applied: 04.02.2021. Published: 19.10.2021.
9. Zaides S. A., Ho Ming Quan. Pendulum surface plastic deformation of cylindrical billets. Izvestiya vuzov. Chernaya metallurgiya. 2022. Vol. 65. No. 5. pp. 344–353.
10. Zaides S. A., Ho Ming Quan. Determination of the stress-strain state of cylindrical parts during circular oscillation of a sectorial working tool. Uprochnyayushchie tekhnologii i pokrytiya. 2022. Vol. 18. No. 1. pp. 6–13.
11. Zaides S. A., Ho Ming Quan. Dependence of the stress-strain state of cylindrical parts on the pendulum action of a sectorial working tool. Tekhnologiya metallov. 2022. No. 6. pp. 24–34.
12. Suslov А. G. The quality of the surface layer of machine parts. Moscow: Mashinostroenie, 2000. 320 p.
13. Saiaf Bin Rayhan, Md Mazedur Rahman. Modeling elastic properties of unidirectional composite materials using Ansys Material Designer. Procedia Structural Integrity. 2020. Vol. 28. pp. 1892–1900.
14. Basov К. А. Аnsys: user guide. Moscow: DMK Press, 2005. 640 p.
15. Mahalov M. S., Blumenstein V. Yu. Finite element surface layer inheritable condition residual stresses model in surface plastic deformation processes. IOP Conference Series: Material Science and Engineering. 2016. Vol. 126. No. 1. p. 012004.
16. Makhalov М. S. Calculation models of residual stresses of the surface layer after hardening by surface plastic deformation methods. Obrabotka metallov. 2012. No. 3. pp. 110–115.
17. Sinitsyn N. I., Chikova О. А., Chezganov D. S. Effect of destruction of microheterogeneity on microstructure and crystal structure of 110G13L steel ingots (Hadfield steel). Chernye Metally. 2020. No. 1. pp. 36–42.
18. Matlin М. М., Lebskiy S. L., Mozgunova А. I. Regularities of elastic-plastic contact in tasks of surface plastic hardening. Moscow: Mashinostroenie-1, 2007. 217 p.
19. Dudnikov А. А., Belovod А. I., Kelemesh А. А. Ensuring the quality of the surface layer of parts during surface treatment by plastic deformation. Tekhnologicheskiy audit i rezervy proizvodstva. 2012. No. 1(3). pp. 22–31.