非均質材中を安定的に進展するき裂の二次元有限要素解析

概要

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The finite element method was applied to a generation phase analysis for stable crack growth in inhomogeneous materials. Experimental data on stable crack growth in bimaterial CT specimens, which were cut from a weldment of a A 533 B Class 1 steel and a HT 80 steel plate, were numerically simulated using the node-release technique to obtain the variations of the fracture mechanics parameters such as J-integral, T^*-integral, J-integral and CTOA. New evaluation schemes for the integral parameters were proposed to be valid for integral paths passing a fusion line of dissimilar materials. It was examined whether simple estimation schemes of the J-integral for a monolithic CT specimen can be applied to a bimaterial CT specimen or not. The effect of inhomogeneity on the fracture mechanics parameter was discussed in terms of the Q-factor.
一般社団法人日本機械学会の論文
1995-02-25