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A prediction model for extremely low cycle fatigue strength of structural steel

✍ Scribed by Kazuo Tateishi; Takeshi Hanji; Kuniaki Minami

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
877 KB
Volume
29
Category
Article
ISSN
0142-1123

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✦ Synopsis

Miner's rule has been accepted as a simple and effective method for predicting the low cycle fatigue life under variable strain amplitude. However, in an extremely large strain field, corresponding to the fatigue life of less than 10 cycles, the accuracy of Miner's rule has not been verified. In this study, low cycle fatigue tests under variable strain amplitude in an extremely large strain field were conducted with a newly developed testing system. Miner's rule always predicted a longer fatigue life than the observed life. A simple model introducing the damage mechanics concept was proposed and its validity was examined as another method for predicting low cycle fatigue life.

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A continuum damage mechanics model for l
A continuum damage mechanics model for low-cycle fatigue failure of metals
✍ Wang June πŸ“‚ Article πŸ“… 1992 πŸ› Elsevier Science 🌐 English βš– 307 KB

Abstnct-A continuum damage ma%nics model for low-cycle fatigue is presented. The rupture time of hot rolled type RS50 steel is predicted by the damage model and compared with those measured with excellent agreement. It is shown that the proposed damage model can predict the rupture time of material