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Area and point approaches in fatigue life evaluation under combined bending and torsion loading

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Abstract

We present a new nonlocal approach to nonuniform stress distribution, consisting in reduction of stresses to representative local ones in the critical plane for fatigue life calculation. The shear and normal stresses are averaged in two overlapping areas of different sizes on the critical plane. The proposed method is compared with the point (in critical distance) method and both are verified by fatigue tests under combined bending and torsion. Verification is done for the experimental and calculated fatigue lives with use of two multiaxial fatigue failure criteria.

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Authors and Affiliations

  1. Opole University of Technology, Opole, Poland

    A. Karolczuk & E. Macha

Authors
  1. A. Karolczuk
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  2. E. Macha
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Correspondence to A. Karolczuk.

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__________

Translated from Problemy Prochnosti, No. 1, pp. 69–72, January–February, 2008.

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Karolczuk, A., Macha, E. Area and point approaches in fatigue life evaluation under combined bending and torsion loading. Strength Mater 40, 60–63 (2008). https://doi.org/10.1007/s11223-008-0016-x

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  • DOI: https://doi.org/10.1007/s11223-008-0016-x

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