Reserve estimate of strength of machine parts subject laden with asymmetrically

Authors

  • Анатолий Дмитриевич Погребняк Institute of Mechanics. S.P. Timoshenko NAN Ukraine 03057, Kyiv, str. P. Nesterova, 3, Ukraine
  • Михаил Николаевич Регульский Institute of Mechanics. S.P. Timoshenko NAN Ukraine 03057, Kyiv, str. P. Nesterova, 3, Ukraine
  • Александр Владимирович Желдубовский Institute of Mechanics. S.P. Timoshenko NAN Ukraine 03057, Kyiv, str. P. Nesterova, 3, Ukraine
  • Павел Васильевич Кондрашев National Technical University of Ukraine «Kiev Polytechnic Institute» Pr. Peremogy, 37, Kyiv, Ukraine, 03056, Ukraine
  • Александр Тимофеевич Сердитов National Technical University of Ukraine «Kiev Polytechnic Institute» 03056, Kiev, etc., 37, Ukraine
  • Юрий Валентинович Ключников National Technical University of Ukraine «Kiev Polytechnic Institute» 03056, Kiev, etc., 37, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2013.19001

Keywords:

margin of safety, static and cyclic loadings, maximum stresses, asymmetric loading

Abstract

Creation of engineering structures is closely related to the need of  improving the methods for strength calculation. This task is es­pecially relevant with regard to the parts subject to cyclic loadings, causing premature failure as a result of the development of the metal fatigue process. In this regard, it is important to develop the research aimed at finding adequate model approximations that describe the interrelation of durability of a construction material with the range of loading conditions and the number of structural features of parts made of it.

The method of calculating the safety margin of parts of engineer­ing structures subject to the combined effects of static and cyclic loadings is considered in this paper. The focus is on assessing the maximum limit stresses characteristic of the asymmetric loading of structural materials, taking into account the stress concentration as one of the main factors inherent in real structural elements. The proposed approach provides more correct calculation of the margin of safety in the implementation of design works.

Thus, the research results given in this paper are of both sci­entific and practical interest. The authors proposed a method for assessing the margin of safety of constructional materials subject to asymmetric cyclic loading, based on the previously developed models of the limit state based on the use of power transcendental functions.

Author Biographies

Анатолий Дмитриевич Погребняк, Institute of Mechanics. S.P. Timoshenko NAN Ukraine 03057, Kyiv, str. P. Nesterova, 3

Kandydat tekhnichnykh nauk

Department of Mechanics of creep

Михаил Николаевич Регульский, Institute of Mechanics. S.P. Timoshenko NAN Ukraine 03057, Kyiv, str. P. Nesterova, 3

Kandydat tekhnichnykh nauk

Department of Mechanics of creep

Александр Владимирович Желдубовский, Institute of Mechanics. S.P. Timoshenko NAN Ukraine 03057, Kyiv, str. P. Nesterova, 3

Kandydat tekhnichnykh nauk, starshyi nauchnyi sotrudnik

Department of Mechanics of creep

Павел Васильевич Кондрашев, National Technical University of Ukraine «Kiev Polytechnic Institute» Pr. Peremogy, 37, Kyiv, Ukraine, 03056

Kandydat tekhnichnykh nauk, dotsent

Department of laser technology and physico-technical technology

Александр Тимофеевич Сердитов, National Technical University of Ukraine «Kiev Polytechnic Institute» 03056, Kiev, etc., 37

Kandydat tekhnichnykh nauk, dotsent

Mechanical Engineering Institute

Department of Laser Technology and Physics and engineering technology

Юрий Валентинович Ключников, National Technical University of Ukraine «Kiev Polytechnic Institute» 03056, Kiev, etc., 37

Mechanical Engineering Institute

Department of Laser Technology and Physics and engineering technology

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Published

2013-12-12

How to Cite

Погребняк, А. Д., Регульский, М. Н., Желдубовский, А. В., Кондрашев, П. В., Сердитов, А. Т., & Ключников, Ю. В. (2013). Reserve estimate of strength of machine parts subject laden with asymmetrically. Eastern-European Journal of Enterprise Technologies, 6(7(66), 8–12. https://doi.org/10.15587/1729-4061.2013.19001

Issue

Vol. 6 No. 7(66) (2013): Applied mechanics

Section

Applied mechanics

License

Copyright (c) 2014 Анатолий Дмитриевич Погребняк, Михаил Николаевич Регульский, Александр Владимирович Желдубовский, Павел Васильевич Кондрашев, Александр Тимофеевич Сердитов, Юрий Валентинович Ключников

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