THE ESTIMATION OF ROLLER STRENGTHENING INFLUENCE ON THE ENDURANCE LIMIT OF SHAFTS WITH PRESSURIZED HUB

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Abstract

The influence of roller strengthening on endurance limit under bending of the 25 mm and 50 mm diameter shafts made of steel 20 and 25 mm diameter shafts made of steel 40X with a pressurized hub has been examined. It’s been stated that the endurance limit of roller strengthened shafts with a pressurized hub depends not only on a value of compressive residual stresses in their dangerous section but on the character of its distribution. The valuation of a surface hardening influence on the endurance limit of shafts by the surface residual stresses criterion and the average integral residual stresses criterion has been shown that the average integral residual stresses criterion calculated through the part’s dangerous section surface layer thickness equal the critical depth of the non-propagating fatigue crack can be recommended for the hardened shafts with a pressurized hub endurance limit increase prediction. It’s been shown that on a diameter of a shaft with a pressurized hub raising it is necessary to increase a thickness of a hardened surface layer with compressive residual stresses.

About the authors

Valentin Fyodorovich Pavlov

Samara University

Author for correspondence.
Email: pavlov.vf@ssau.ru

doctor of technical sciences, head of strength of materials department

Russian Federation

Vladimir Stepanovich Vakulyuk

Samara University

Email: vak.v.s@yandex.ru

doctor of technical sciences, professor of strength of materials department

Russian Federation

Vyacheslav Petrovich Sazanov

Samara University

Email: sazanow@mail.ru

candidate of technical science, associate professor of strength of materials department

Russian Federation

Arsenij Vital'evich Efrosinin

Samara University

Email: sopromat@ssau.ru

postgraduate student of strength of materials department

Russian Federation

References

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Copyright (c) 2020 Валентин Фёдорович Павлов, Владими Степанович Степанович Вакулюк, Вячеслав Петрович Сазанов, Арсений Витальевич Ефросинин

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Journal of Dynamics and Vibroacoustics

ISSN 2409-4579 (Online)

Publisher and Founder: Samara National Research University, 34, Moskovskoye shosse, Samara, 443086, Russian Federation.

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E. V. Shakhmatov 

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