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On the fatigue limit of ductile metals under complex multiaxial loading

✍ Scribed by Harald Zenner; Armin Simbürger; Jiping Liu

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
363 KB
Volume
22
Category
Article
ISSN
0142-1123

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✦ Synopsis

The classical strength hypotheses are not applicable for the calculation of the fatigue limit under multiaxial loading with changing directions of the principal stresses. Hitherto, two groups of concepts have been proposed, the critical plane approach and the integral approach. In the present paper it is shown that with the integral approach, in particular the Shear Stress Intensity Hypothesis SIH, a good estimation can be achieved with complex periodical loads. This is verified using the results of 179 test series with ferritic and ferritic perlitic steel with a range of the tensile strength of R m =400-1600 MPa. References will be given to further hypotheses and developments.

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