โ Scribed by Xiangquao Yan; Weisheng Lei
No coin nor oath required. For personal study only.
Rice's J-integral [1] is one of the most important fracture parameters. Its conservation was proved for homogeneous materials. Materials in welded joint zone in many engineering structures are nonhomogeneous. The effect of this material's nonhomogeneity on fracture parameters is often investigated by using a mechanical model shown in Fig. 1 [2,3]. Recently, the authors used the mechanical model by means of the elastic-plastic finite element method, to investigate if the J-integral is still conservative [4]. The conclusion was that the J-integral is still conservative. Here is reported the effect of mechanical property nohomogeneity in welded joint zone on J-integral. The numerically calculated formula of the J-integral is referred to in [4].
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