On Three Dimensional Generalized J-Integral
According to slice model, three dimensional J-Integrals are derived with consideration of effects about curvature of crack front and temperature fields. These integrals are proved to be path-independent and convergent. The relationship between the J-Integrals and stress intensity factors are established. The numerical results about stress intensity factors obtained by finite element method are shown to be convergent and degrees of freedom can be reduced significantly by means of three dimensional generalized J-Integrals.
KeywordsFinite Element Method Stress Intensity Factor Temperature Field Surface Crack Energy Release Rate
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