LUAN Mao-tian, YANG Xin-hui, YANG Qing, et al. A mixed-mode fracture criterion based on maximum Mises stress on radial plane under three-dimensional stress condition[J]. 2006, 27(10期 刊出日).
LUAN Mao-tian, YANG Xin-hui, YANG Qing, et al. A mixed-mode fracture criterion based on maximum Mises stress on radial plane under three-dimensional stress condition[J]. 2006, 27(10期 刊出日).DOI:
Based on the analysis of fractural mechanism of brittle materials
the concept of the radial plane maximum stress (RPMS) is presented. Under plane-strain condition
the stress distribution near the crack-tip is analyzed for mixed loading mode with different composite stress ratios in which the effect of Poisson’s ratio is taken into account. Afterwards
the maximum Mises stress on the radial plane is taken as the key factor which governs the fracture behavior and crack initiation and the mixed fracture criterion on the basis of the radial plane maximum stress is proposed to consider the effect of three-dimensional stresses. As a result
the expression of crack initiation orientation is given. The results computed by the proposed method are compared with solution obtained by the conventional fracture theory and experimental data. It is shown that the proposed solution can give a good understanding of fractural mechanism and behavior of brittle materials under combined loading pattern.