6533b832fe1ef96bd129a135
RESEARCH PRODUCT
Fatigue life estimation for 30CrNiMo8 steel under in- and out-of-phase combined bending and torsion with variable amplitudes
E. MachaT. Lagodasubject
Variance methodStructural materialMaterials sciencebusiness.industryMechanical EngineeringMonte Carlo methodTorsion (mechanics)Structural engineeringCondensed Matter PhysicsOut of phaseAmplitudeMechanics of MaterialsSolid mechanicsShear stressGeneral Materials Sciencebusinessdescription
Fatigue life successively calculated according to three criteria of multiaxial fatigue for randomly varying loading is compared with fatigue life obtained by Sanetra and Zenner in testing cylindrical specimens of 30CrNiMo8 steel by in- and out-of-phase bending and torsion with variable amplitudes. The position of the plane of fatigue fracture is determined using the variance method. The histories of equivalent stresses are schematically represented by the Monte Carlo method. Fatigue damage was computed using the Palmgren-Miner hypothesis. The most realistic estimates of fatigue life in the scatter band of the results with a factor of 3 are obtained on the basis of the criterion of maximum tangential stresses and normal stresses in the fracture plane with shear stresses taken into account.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1996-01-01 | Materials Science |