期刊
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
卷 34, 期 12, 页码 1041-1052出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1460-2695.2011.01593.x
关键词
FGM; J-integral; numerical method; V-notch
The main purpose of the paper is to propose a numerical method for evaluation of J-integral in plates made of functionally graded materials (FGM) with sharp and blunt V-notches under Mode I loading. The material properties have been assumed to be varied exponentially along the specimen width (notch direction). Using the proposed method, the effect of material gradient on the J-integral for two cases of sharp and blunt V-notches has been studied. The results have shown that in FGMs with sharp V-notches, the J-integral is not proportional to . So, the parameter JL is path dependent. It has been observed that the material gradient has larger effect on the J-integral in sharp V-notch compared with that in blunt V-notch.
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