Prediction of fatigue strength under cyclic loading

Authors

  • Мамед Багир огли Ахундов Azerbaijan National Academy of Sciences Institute of Mathematics and Mechanics Baku AZ1143, B.Vaxabzade St., 9, Azerbaijan
  • Алі-заде Имамалі огли Сейфуллаев Azerbaijan National Academy of Sciences Institute of Mathematics and Mechanics Baku AZ1143, B.Vaxabzade St., 9, Azerbaijan
  • Афат Октай кизи Юзбашиєва Azerbaijan National Academy of Sciences Institute of Mathematics and Mechanics Baku AZ1143, B.Vaxabzade St., 9, Azerbaijan

DOI:

https://doi.org/10.15587/1729-4061.2013.14823

Keywords:

Fatigue strength, cyclic loading, defectiveness, stress, creep, viscoelasticity, healing of defects, damage

Abstract

Main part of elements of constructions and machine parts operate under cyclic loading. Their working life cannot be determined on the basis of traditional criteria of strength, which generally do not take into account the process of the defectiveness, which is one of the characteristic and priority processes that occur under cyclic loading. The article proposes an approach to the assessment of long-term strength under the cyclic uniaxial loading on the basis of the heredity theory of defectiveness. The advantages of this approach are discussed. The analysis with the effect of the healing of defects was carried out. An approximate formula for the critical number of cycles of loading to damage in the absence of the effect of the healing of defects was found. This formula gives an estimate of long-term strength for the inhomogeneous one-dimensional stress state, determining the fatigue strength

Author Biographies

Мамед Багир огли Ахундов, Azerbaijan National Academy of Sciences Institute of Mathematics and Mechanics Baku AZ1143, B.Vaxabzade St., 9

Professor 

Алі-заде Имамалі огли Сейфуллаев, Azerbaijan National Academy of Sciences Institute of Mathematics and Mechanics Baku AZ1143, B.Vaxabzade St., 9

Candidate of Physical and Mathematical Sciences

Афат Октай кизи Юзбашиєва, Azerbaijan National Academy of Sciences Institute of Mathematics and Mechanics Baku AZ1143, B.Vaxabzade St., 9

Candidate of Physical and Mathematical Sciences

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Published

2013-06-20

How to Cite

Ахундов, М. Б. о., Сейфуллаев, А.-з. И. о., & Юзбашиєва, А. О. к. (2013). Prediction of fatigue strength under cyclic loading. Eastern-European Journal of Enterprise Technologies, 3(7(63), 44–47. https://doi.org/10.15587/1729-4061.2013.14823

Issue

Vol. 3 No. 7(63) (2013): Applied mechanics

Section

Applied mechanics

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Copyright (c) 2014 Мамед Багир огли Ахундов, Алі-заде Имамалі огли Сейфуллаев, Афат Октай кизи Юзбашиєва

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