Email this article AN INFLUENCE OF ROLLER STRENGTHENING ON MULTCYCLIC FATIGUE OF SPECIMENS WITH CUTS OF VARIOUS DEPTH AND A PRESSURIZED HUB
- Authors: Pavlov V.F.1, Sazanov V.P.1, Vakulyuk V.S.1, Tumanov D.V.1, Bogdanova I.V.1
-
Affiliations:
- Samara National Research University
- Issue: Vol 8, No 1 (2022): 19.07.2022
- Pages: 6-11
- Section: Articles
- Published: 19.07.2022
- URL: https://dynvibro.ru/dynvibro/article/view/10541
- DOI: https://doi.org/10.18287/2409-4579-2022-8-1-6-11
- ID: 10541
Cite item
Full Text
Abstract
The influence of roller strengthening on a residual stresses distribution and multicyclic fatigue of solid cylindrical specimens of 50 mm diameter made of steel 20 with cuts of various depths and a pressurized hub has been examined. As a result, an endurance limit of roller strengthened specimens diminishes. In order to preserve the effect of hardening with a cut’s depth increase, it’s necessary to increase the thickness of a layer with compressive residual stresses. Surface hardening influence on an endurance limit of specimens has been estimated by two criteria: axial residual stresses on a concentrator’s surface and average integral residual stresses, calculated through the dangerous section’s surface layer thickness that equal a critical depth of a non-propagating fatigue crack. It’s been stated that it’s more reasonable to use the average integral residual stresses criterion for an evaluation of roller strengthening influence on an endurance limit of specimens with cuts of various depth and a pressurized hub.
About the authors
Valentin Fyodorovich Pavlov
Samara National Research University
Author for correspondence.
Email: pavlov.vf@ssau.ru
doctor of technical sciences, head of strength of materials department of Samara National Research University (Samara University)
Russian Federation, 34, Moskovskoe shosse, Samara, 443086, Russian FederationVyacheslav Petrovich Sazanov
Samara National Research University
Email: sazanow@mail.ru
candidate of technical science, associate professor of strength of materials department of Samara National Research University (Samara University)
Russian Federation, 34, Moskovskoe shosse, Samara, 443086, Russian FederationVladimir Stepanovich Vakulyuk
Samara National Research University
Email: vak.v.s@yandex.ru
doctor of technical sciences, professor of strength of materials department of Samara National Research University (Samara University)
Russian Federation, 34, Moskovskoe shosse, Samara, 443086, Russian FederationDmitrij Vyacheslavovich Tumanov
Samara National Research University
Email: sopromat@ssau.ru
postgraduate student of strength of materials department of Samara National Research University (Samara University)
Russian Federation, 34, Moskovskoe shosse, Samara, 443086, Russian FederationIrina Vyacheslavovna Bogdanova
Samara National Research University
Email: sopromat@ssau.ru
postgraduate student of strength of materials department of Samara National Research University (Samara University)
Russian Federation, 34, Moskovskoe shosse, Samara, 443086, Russian FederationReferences
- Ivanov, S.I., Pavlov, V.F., (1976) Vliyanie ostatochnyh napryazhenij na ustalostnuyu prochnost’ [Residual stresses influence on fatigue strength]. Problemy prochnosti [Strength problems], no. 5, pp. 25-27. (in Russian).
- Pavlov, V.F., (1986) O svyazi ostatochnyh napryazhenij i predela vynoslivosti pri izgibe v usloviyah koncentracii napryazhenij [On connection between residual stresses and endurance limit under bending in stresses concentration conditions]. Izvestiya vusov. Маshinostroeniye [Universities News. Mechanical Engineering], no. 8, pp. 29-32. (in Russian).
- Pavlov, V.F., Kirpichev, V.A., Vakulyuk, V.S., (2012) Prognozirovanie soprotivleniya ustalosti poverhnostno uprochnyonnyh detalej po ostatochnym napryazheniyam [The prediction of surface hardened parts fatigue resistance by residual stresses]. Samara: Izdatel'stvo SNC RAN [Samara: Samara scientific centre Publishing House of the Russian Academy of Sciences], 125 pp. (in Russian).
- Ivanov, S.I., (1971) K opredeleniyu ostatochnyh napryazhenij v cilindre metodom kolec i polosok. Ostatochnye napryazheniya [On determination of residual stresses in cylinder by rings-and-stripes method. Residual stresses]. Kuibyshev: KuAI [Kuibyshev Aviation Institute], issue 48, pp. 179-183. (in Russian).
- Ivanov, S.I., Shatunov, M.P., Pavlov, V.F., (1974) Vliyanie ostatochnyh napryazhenij na vynoslivost' obrazcov s nadrezom [The influence of residual stresses on the endurance of notched specimens]. Voprosy prochnosti elementov aviacionnyh konstrukcij. Kujbyshev: KuAI [Problems of aircraft constructions elements strength. Kuibyshev Aviation Institute], issue 3, pp. 88-95. (in Russian).
- Radchenko, V.P., Pavlov, V.F., (2011) Naibol’shaya velichina sjimayutschych ostatochnyh napryazhenij pri poverhnostnom uprochnenii detalej [The maximum of compressive residual stresses under surface hardening of parts]. Trudy MNTK «Prochnost' materialov i elementov konstrukcij». Kiev: IPP im.G.S. Pisarenko NANU [Proceedings of the International Scientific Technical Conference “Strength of materials and structural elements”. Kiev: The G.S. Pisarenko Strength Problems Institute of the Ukraine Academy of Sciences], pp. 354-357. (in Russian).
- Filatov, E.Ya., Pavlovsky, V.E., (1985) Universal’niy complex mashin dlya ispytaniya materialov i konstruktzij na ustalost’ [Universal machine complex for fatigue tests of materials and structures]. Kiev: Naukova Dumka [Kiev: Scientific Thought], 92 pp. (in Russian).
- Serensen, S.V., Kogayev, V.P., Shneyderovich, R.M., (1975) Nesutschaya sposobnost’ i raschet detaley mashin na prochnost’ [Carrying capacity and strength analysis of machine elements]. Moscow: Machinostroyeniye (Mechanical Engineering), 488 pp. (in Russian).
Supplementary files
