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Fatigue fracture plane under Multiaxial Random Loadings – prediction by variance of equivalent stress based on the maximum shear and normal stresses

✍ Scribed by Dr. W. Bȩdkowski; Prof. Dr. E. Macha

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
951 KB
Volume
23
Category
Article
ISSN
0933-5137

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✦ Synopsis

Abstract

It is assumed that the plane in which the maximum variance of the equivalent stress appears is critical for a material and the fatigue fracture should be expected in this plane. The equivalent stress is calculated according to the fatigue criterion of maximum shear and normal stresses in the fracture plane. It was demonstrated that for each stationary random stress state there is one or more critical planes where the fatigue fracture plane can be expected. The variance method together with the discussed fatigue criterion give good results for three analysed types of carbon steels under multiaxial cyclic loadings.

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The equivalent stress on the critical pl
The equivalent stress on the critical plane determined by the maximum covariance of normal and shear stresses. Bestimmung der äquivalenten Spannung in der kritischen Ebene durch die maximale Kovarianz von Normal- und Scherspannungen
✍ Karolina Walat; Tadeusz Lagoda 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 404 KB

## Abstract The paper presents a new form of the stress criterion of multiaxial random fatigue. The criterion has been defined as a sum of normal and shear stresses with weight coefficients on the critical plane defined as the plane where the maximum covariance between shear and normal stresses occ