DocumentCode :
2887252
Title :
Fatigue failure model with peridynamic theory
Author :
Oterkus, Erkan ; Guven, Ibrahim ; Madenci, Erdogan
Author_Institution :
Dept. of Aerosp. & Mech. Eng., Univ. of Arizona, Tucson, AZ, USA
fYear :
2010
fDate :
2-5 June 2010
Firstpage :
1
Lastpage :
6
Abstract :
This study presents a methodology to predict the fatigue failure of materials due to cyclic loading within the realm of peridynamic theory. This approach incorporates material failure intrinsically without the need for external crack growth criteria and post-processing. Failure occurs when and where it is energetically favorable. Fatigue life prediction is a natural extension of crack initiation and growth while allowing material degradation. The present approach focuses on the crack growth phase of fatigue life rather than initiation. During the crack growth phase, material degrades, and fatigue process is viewed as a quasi-static series of discrete crack growth steps. Crack growth process is controlled by the critical value of material stretch and that cyclic loading causes degradation in the critical stretch. When the critical amount of stretch is reached, stable crack growth occurs.
Keywords :
fatigue cracks; fatigue testing; materials testing; crack initiation; cyclic loading; discrete crack growth; fatigue failure model; fatigue life prediction; material degradation; peridynamic theory; Aerospace engineering; Aerospace materials; Degradation; Electronics packaging; Failure analysis; Fatigue; Geometry; Mechanical engineering; Predictive models; Process control; crack; failure; fatigue; fracture; peridynamics;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm), 2010 12th IEEE Intersociety Conference on
Conference_Location :
Las Vegas, NV
ISSN :
1087-9870
Print_ISBN :
978-1-4244-5342-9
Electronic_ISBN :
1087-9870
Type :
conf
DOI :
10.1109/ITHERM.2010.5501273
Filename :
5501273
Link To Document :
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