Values of energy release rate, J integral and J-star integral computed in random elastic medium

Single edge notched tensile (SENT) specimen is simulated in 2D with random elastic modulus oscilating according to a Lognormal random field with square exponential autocorrelation. Four different correlation lengths are considered: 0.02, 0.04, 0.08 and 0.16 m. For each variant there is 1000 realizations.

The data reports:

values of energy release rate G computed from numerical differentiation of complementary energy;

values of J integral evaluated at 9 contours with increasing radius;

values of J-star integral on the same contours.

This J-star integral is extension of the classical one for random media according to the linked paper.