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Metallology and physics of metals
ArticleName Non-contact deformation during pendulum surface plastic deformation of structural steel
DOI 10.17580/chm.2022.09.09
ArticleAuthor S. A. Zaides, Ho Ming Quan

Irkutsk National Research Technical University, Irkutsk, Russia:

S. A. Zaides, Dr. Eng., Prof., Dept. of Materials Science, Welding and Additive Technologies, e-mail:
Ho Ming Quan, Postgraduate Student, Dept. of Materials Science, Welding and Additive Technologies, e-mail:


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.

keywords Surface plastic deformation, sectorial working tool, plastic deformation, elastoplastic waves, temporary stresses, structural steel

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