On the computation of stress intensity factors for three-dimensional geometries by means of the stiffness derivative and J-integral methods
作者： Leslie Banks-Sills , Dov Sherman
DOI: 10.1007/BF00032694
关键词: Stress intensity factor 、 Derivative 、 Mathematical analysis 、 Volume integral 、 Computation 、 Fissure 、 Geometry 、 Finite element method 、 Mathematics 、 Stiffness 、 Stiffness matrix
摘要: Two methods are examined for accurately calculating stress intensity factors in two and three dimensions: the stiffness derivative technique J-integral method. In dimensions is expressed as an area integral, whereas it a volume integral. With both techniques, virtual crack extension introduced. Although expressions employed each method quite different, proven that when written analytically finite element calculation, they reduce to identical expressions.
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