The inclined crack under biaxial load

Effect of Multiaxial Loading on Crack Growth. Volume 1. Technical Summary

“…If ax is larger than ,y in tension, recent analytical results [28] have shown that the crack will turn toward the Y-axis. Regardless of whether the original crack plane is either parallel or inclined to a ethe angles of initial crack extension will be positive (counterclockwise) and the crack will end up normal to ax, the most dominating stresses where maximum K 1 is enhanced.…”

“…Regardless of whether the original crack plane is either parallel or inclined to a ethe angles of initial crack extension will be positive (counterclockwise) and the crack will end up normal to ax, the most dominating stresses where maximum K 1 is enhanced. Analytic solutions relating the angle of initial crack extension and the original orientation of the crack is available [28]. However, there has been no analysis concerning the status of stress intensity variations after the crack has extended.…”

“…Suppose the crack is originally set at a degrees in respect to the X-axis. Making use of the 0 crack angle and biaxial ratio relationships given by Eftis and Subramonian [28], i.e., Subsequently, the "da" value for that load cycle can be determined through a crack growth rate equation which presents the baseline crack growth rate behavior.…”

On the fracture stress for the inclined crack under biaxial load

“…The significance of load biaxiality for fracture was investigated initially for the horizontal crack [1], and then for the inclined crack [2]. Attention in each of these studies was confined to analysis of the local region enclosing the crack-tip.…”

Evaluation of the elastic-plastic mixity parameters on the base of different crack propagation criteria. Part 1. Preliminary analysis

“…Let us consider a crack in a general mixed mode stress field and examine the extension o f the crack from the tip. All the geometric configurations, characterizing the loaded cracked plate as well as the stress field, are shown in For an elastic and isotropic plate, under conditions of plane strain, containing an inclined internal crack of length 2a and obliqueness y3, which is submitted at infinity to a biaxial stressed state, defined by the stress o yn = o and o xn = along two adjacent sides of the plate, the components o f stresses at the tip crack are given by relations [18][19][20] …”