Acta Metallurgica Sinica (English Letters) >
Effect of three dimensional stress state on unstable fracture condition and crack opening level in a new crack growth model
Received date: 2009-04-23
Revised date: 2009-06-21
Online published: 2010-02-09
A new model for the analysis of fatigue crack growth in the metal structures was proposed. This model shows a promising capability of explaining various fatigue phenomena. The new crack growth model is further completed by a continuous empirical formula for estimating the value of variable fracture toughness during crack propagation and a modified continuous equation for the crack tip stress/strain constraint factor used to calculate the stress intensity factor at the opening level. The prediction results are proved to agree well with the observed phenomena in test.
YU Fang , CUI Wei-Cheng . Effect of three dimensional stress state on unstable fracture condition and crack opening level in a new crack growth model[J]. Acta Metallurgica Sinica (English Letters), 2010 , 23(1) : 41 -49 . DOI: 10.11890/1006-7191-101-41
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