کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
777678 | 1463779 | 2013 | 9 صفحه PDF | دانلود رایگان |
Scope of the present work is the development of a unified approach for the life prediction under isothermal and thermo-mechanical loading conditions. The basis for the life prediction is the stress–strain response of the material for one selected cycle obtained in the context of a Finite Element Analysis. Here the application of an appropriate inelastic constitutive model is essential. A phenomenological fatigue model is proposed which is able to describe mean-stress effects, as well as dependencies on hold time and cycle duration with reasonable accuracy. The model performance is compared with that of a mechanism based literature model. The model accuracy is evaluated on a statistical basis through an evaluation of the variance in the ratio between predicted life and actual life.
Journal: International Journal of Fatigue - Volume 53, August 2013, Pages 49–57