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Evaluation of fatigue life calculation algorithm of the multiaxial stress-based concept applied to S355 steel under bending and torsion

Macek W., Mucha N.

Mechanics and Mechanical Engineering

2017

Vol. 21, nr 4

935--951

This paper presents the results of a study into the stress-based fatigue life calculation algorithm applied to cyclic and random multiaxial proportional and non-proportional loading. This method for high-cycle fatigue, covers both infinite and finite life region, and is based on a critical plane approach combined with rain flow cycle counting and linear damage accumulation. Algorithm based on the method for equivalent scaling of the normal stress in material planes in dependence on the stress state, proposed by Gaier and Danbauer. For analysis the calculated fatigue lives are compared to the experimental results for steel S355 under proportional and non-proportional bending with torsion.