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Publicações
Yue, JX., Damg, ZF. e Guedes Soares, C. (2017), “Prediction of Fatigue Crack Propagation in Bulb Stiffeners by Experimental and Numerical Methods”, International Journal of Fatigue, Vol. 99, pp. 101-110
The fatigue crack propagation in the bulb-flat, which is widely used in ship and bridge engineering, is one of the basic parameters for structures’ fatigue life prediction. The shape of a three dimensional surface crack in full-scale bulb-flat fatigue test was measured and estimated by Nominalization Crack Opening Displacement (NCOD) method. Then the obtained crack shape was used to predict the fatigue crack propagation in the bulb-flat based on the two dimensional Paris’ law and the Liner Finite Element Analysis (LFEA) method. Moreover, the predicted fatigue crack propagation has been verified by the full-scale fatigue test on a typical ship structure detail. This method proposed in this paper may provide reference to the definition of failure criterion of bulb-flat.
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