Obrabotka Metallov 2021 Vol. 23 No. 2

OBRABOTKAMETALLOV Vol. 23 No. 2 2021 64 EQUIPMENT. INSTRUMENTS References 1. SuslovA.G., ed. Tekhnologiya i instrumenty otdelochno-uprochnyayushchei obrabotki detalei poverkhnostnym plasticheskim deformirovaniem . V 2 t. T. 1 [Technology and tools of fi nishing and strengthening processing of parts by surface plastic deformation. In 2 vol. Vol. 1]. Moscow, Mashinostroenie Publ., 2014. 480 p. 2. Delgado P., Cuesta I.I., Alegre J.M., Díaz A. State of the art of Deep Rolling. Precision Engineering , 2016, vol. 46, pp. 1–10. DOI: 10.1016/j.precisioneng.2016.05.001. 3. Altenberger I. Deep Rolling – the past, the present and the future. 9th International Conference on Shot Peening ICSP-9 , Paris, France, 2005, pp. 144–155. 4. Tamarkin M.A., Shvedova А .S., Grebenkin R.V., Novokreshchenov S. А . Tekhnologicheskoe obespechenie zadannogo kachestva poverkhnostnogo sloya detalei pri obrabotke dinamicheskimi metodami poverkhnostnogo plasticheskogo deformirovaniya [Engineering support for speci fi ed quality of parts surface layer under dynamic Tool pro fi le stationarity while simulating surface plastic deformation by rolling as a process of fl at periodically reproducible deformation Andrey Krechetov a, * T.F. Gorbachev Kuzbass State Technical University, 28 Vesennyaya str., Kemerovo, 650000, Russian Federation a https://orcid.org/0000-0002-7569-7362, krechetovaa@kuzstu.ru Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2021 vol. 23 no. 2 pp. 54–65 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2021-23.2-54-65 Obrabotka metallov - Metal Working and Material Science Journal homepage: http://journals.nstu.ru/obrabotka_metallov ARTICLE INFO Article history : Received: 03 March 2021 Revised: 16 March 2021 Accepted: 03 April 2021 Available online: 15 June 2021 Keywords : Deep rolling Technological inheritance mechanics Modeling of the accumulation of deformations and metal damage Funding The work was supported by RFBR, project number 20-08-00587. ABSTRACT Introduction. Surface plastic deformation is an effective way to improve the operating performance of machine parts. One of the promising approaches to the design of surface hardening technological processes is the technological inheritance mechanics. To calculate the hereditary parameters characterizing the accumulated deformation and damage to the metal, it is possible to simulate spinning as a process of plane fractional deformation, which signi fi cantly reduces the time required for modeling the process. However, upon rotation of the plane in which the stress-strain state is considered, the roller pro fi le changes. The aim of the work is to assess the magnitude of the change in the roller pro fi le in the deformation plane during deformation as an important factor ensuring the accuracy of the solution obtained. Research methods . The roll pro fi le in the warp plane is de fi ned by the intersection line of the roll surface and this plane. The paper presents the procedure for calculating the coordinates of the points of intersection lines, which are curves of the fourth order, depending on the geometric dimensions of the roller and the part, as well as the angle of inclination of the deformation plane. Results and discussion. To estimate the value of the roller pro fi le change, the coordinates of the points of the intersection lines of the roller surface and the deformation plane are determined for the rolling modes corresponding to a suf fi ciently developed plastic deformation, the obtained lines are approximated in the coordinate system associated with the deformation plane, and the relative change in the coordinates of the intersection lines when the plane was rotated are estimated. As a result of the conducted analytical studies, it is found that even with developed plastic deformation, the relative change in the coordinates of the points of intersection lines does not exceed 0.1%. This indicates the possibility of using a stationary roller pro fi le when simulating rolling using the plane fractional deformation model. For citation: Krechetov A.A. Tool pro fi le stationarity while simulating surface plastic deformation by rolling as a process of fl at periodically reproducible deformation. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science , 2021, vol. 23, no. 2, pp. 54–65. DOI: 10.17212/1994-6309-2021-23.2-54-65. (In Russian). ______ * Corresponding author Krechetov Andrey A. , Ph.D. (Engineering), Associate Professor T.F. Gorbachev Kuzbass State Technical University 28 Vesennyaya str., 650000, Kemerovo, Russian Federation Tel.: 8 (3842) 39-63-75, e-mail: krechetovaa@kuzstu.ru