Abstract
The effect of nonsingular T-stress components on the plastic-deformation zone size near the tip of a mode I crack as a function of the sample thickness is analyzed theoretically and numerically. The calculations are performed for compact samples of three thicknesses. The plastic-deformation zone size in the middle plane of the sample is found to decrease with increasing sample thickness. To determine the shape of the plastic-deformation zone more correctly, it is necessary to take into account the angular distribution of the nonsingular T stresses near the crack tip.
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