Numerical and Experimental Analysis on Mode II Fracture Regular Pattern of the Marble

Abstract

Abstract: The in-plane mode II fracture of the Athenian marble slab with double parallel notches is studied in virtue of the finite element procedurecombined with rock tests. The analysis incorporates the influence of fracture behavior resulting from variation in both the position of the double notches and the cases of loading scheme. Based on the analysis of the numerical simulation, it is shown that the mode II fracture would take place when the ratio a/w is less than 0.3 in the two cases of loading scheme. After the geometrical correction factor is obtained from the results of the finite element method by the polynomial fitting method, the fracture toughness values, KIIC, determined for the specimens based on the ultimate load from the experiments and the geometrical correction factor. It is found that the value a/w is a critical parameter to determine the occurrence of the mode II fracture in the slab through the auxiliary splitting tensile tests.

Key words: marble, mode II fracture； fracture toughness； , finite element method

CLC Number:

TU192
TU13

QIU Yi-Ping-1, QI Jing-Hua-1, WU Xue-Ping-1, CHEN Lei-2. Numerical and Experimental Analysis on Mode II Fracture Regular Pattern of the Marble[J]. Journal of Shanghai Jiaotong University, 2011, 45(04): 553-560.

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