Masanori Kikuchi 1
CMES-Computer Modeling in Engineering & Sciences, Vol.11, No.2, pp. 49-60, 2006, DOI:10.3970/cmes.2006.011.049
Abstract Three kinds of fracture specimens are tested
under different constraint conditions. By the SEM(Scanning
Electron Microscope) observation, it is shown that
the roughness of fracture surface is different from each
other largely. This is the effect of constraint condition.
The dimple fracture process is simulated by the finite
element method using Gurson’s constitutive equation,
and the crack tip stress fields are obtained. The distributions
of stress triaxiality qualitatively agree with the
experimental results. The J-R curves obtained also qualitatively
agree with those of experiments, and the fracture
surface roughness is well simulated. More >
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