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- W1123376589 abstract "Anti-symmetric four-point bending specimen with different loading point positions was used to study effect of loading point position on fracture mode of rock in order to explore a feasible method for achieving Mode Ⅱ fracture and determining Mode Ⅱ fracture toughness of rock, KⅡC. Numerical and experimental results show that the distance between the inner and outer loading points, L1+L2, has a great influence on stresses at notch tip and fracture mode. When L1+L2＞0.5L or 0.1L＜L1+L2＜0.5L, maximum principal stress σ1 exceeds the tensile strength σt. The ratio of τmax/σ1 is relatively low or high and thus Mode Ⅰ or mixed mode fracture occurs. When L1+L2＜0.1L, σ1 is smaller than σt and the ratio of τmax/σ1 is much higher, which facilitates the occurrence of Mode Ⅱ fracture." @default.
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- W1123376589 title "Effect of loading point position on fracture mode of rock" @default.
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