28th Congress of the International Council of the Aeronautical Sciences, 23 - 28 September 2012, Brisbane, Australia
Paper ICAS 2012-7.7.4

CRACK NUCLEATION MODELING IN NOTCHED SPECIMEN SUBJECTED TO HIGH FATIGUE LOADING

X. Huang, C. Xiong*, B. Su
BIAM, China; *Beijing SupCompute Technology Co. Ltd, China

Keywords: stress concentration, fatigue, finite element method, crack initiation

This paper describes modeling work on crack nucleation in notched specimen of a martensitic steel undergoing high fatigue stresses. Elastic-plastic finite element analysis on a notched specimen is carried out. A 400 grains aggregation model is created and the local stress distribution in the model is obtained.

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