Abstract
Crack growth in a solid with plastic anisotropy is modeled by representing the fracture process in terms of a traction-separation law specified on the crack plane, and crack growth resistance curves are calculated numerically. A phenomenological elastic-viscoplastic material model is applied, using one of two different anisotropic yield criteria to account for the plastic anisotropy. The analyses are carried out for conditions of small scale yielding, with mode I loading conditions far from the crack-tip. Different initial orientations of the principal axes relative to the crack plane are considered and it is found that the steady-state fracture toughness is quite sensitive to the type of anisotropy and to the angle of inclination of the principal axes relative to the crack plane.
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Tvergaard, V., Legarth, B.N. Effect of plastic anisotropy on crack growth resistance under mode 1 loading. International Journal of Fracture 130, 411–425 (2004). https://doi.org/10.1023/B:FRAC.0000049498.15818.33
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DOI: https://doi.org/10.1023/B:FRAC.0000049498.15818.33