Fatigue Strength Calculations for Non-Uniaxial Stress States

The increase of service life of parts and assemblies is a topical problem in mechanical engineering. Calculations for endurance determine the life of assemblies, machines, structures, and their elements. The authors propose a method of endurance calculations for non-uniaxial stress states in the concentrator zone using valid stresses obtained through calculation. Criteria are defined for the calculation of the equivalent stress that takes into account the sign of the principal stress cycle characteristics. The criteria are determined by transforming classical formulae. The proposed method of endurance calculation can be applied not only to multiaxial stress states but also to uniaxial ones.

References

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