کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
778445 | 1463803 | 2011 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Material dependence of multiaxial low cycle fatigue lives under non-proportional loading Material dependence of multiaxial low cycle fatigue lives under non-proportional loading](/preview/png/778445.png)
This study discusses evaluation of material dependence of multiaxial low cycle fatigue to develop a suitable strain parameter for life estimation under non-proportional loading. It has been reported that fatigue lives are reduced accompanying an additional hardening under strain controlled non-proportional loading in which principal directions of stress and strain are changed in a cycle. Strain controlled multiaxial low cycle fatigue tests under proportional and non-proportional strain paths were carried out using hollow cylinder specimens of several materials. The reduction in low cycle fatigue life due to non-proportional loading is discussed relating to the additional cyclic hardening behaviors and its material dependence. Material constant, α, used in strain parameter for life estimation under non-proportional multiaxial low cycle fatigue is also discussed.
Journal: International Journal of Fatigue - Volume 33, Issue 8, August 2011, Pages 1025–1031