Relationships between the J-integral and the crack opening displacement for stationary and extending cracks
作者： C.F. Shih
DOI: 10.1016/0022-5096(81)90003-X
关键词: Crack growth resistance curve 、 Finite element method 、 Forensic engineering 、 Geometry 、 Hardening (metallurgy) 、 Material Deformation 、 Singularity 、 J integral 、 Crack tip opening displacement 、 Materials science 、 Crack closure
摘要: R elationships between the J-integral and the crack opening displacement δ t are obtained by exploiting the dominance of the Hutchinson-Rice-Rosengren singularity in the crack-tip region. The coefficient dn that relates J to δ t, is dependent on the material deformation properties and is independent of crack configuration under small-scale yielding conditions. For low hardening materials, dn appears to be configuration dependent in the fully yielded state. Similarly, the slope of the J-resistance curve is relatable to an operationally defined …
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