Records written for contour integrals

Calculations of the J-integral and the C $_{t}$ -integral, the stress intensity factors, the crack propagation direction, and the T-stress can be requested. The record is written for each crack, one record per crack front location. See record key 17 for J-integral values for line spring elements.

Record format: records written for contour integrals

1991 J-integral values

Crack number.
Node set (A8 format).
Number of contours.
J-integral value estimated by first contour.
J-integral value estimated by second contour.
Etc.

1992 C

​_{t}

-integral values

Crack number.
Node set (A8 format).
Number of contours.
C $_{t}$ -integral value estimated by first contour.
C $_{t}$ -integral value estimated by second contour.
Etc.

1995 Stress intensity factors

Crack number.
Node set (A8 format).
Number of contours.
$K_{I}$ (Mode I stress intensity factor) estimated by first contour.
$K_{I I}$ (Mode II stress intensity factor) estimated by first contour.
$K_{I I I}$ (Mode III stress intensity factor) estimated by first contour (available only for 3D elements).
Crack propagation direction (in degrees) estimated by first contour (available only for homogeneous, isotropic elastic materials).
J-integral value estimated from stress intensity factors of first contour.
$K_{I}$ (Mode I stress intensity factor) estimated by second contour.
$K_{I I}$ (Mode II stress intensity factor) estimated by second contour.
$K_{I I I}$ (Mode III stress intensity factor) estimated by second contour (available only for 3D elements).
Crack propagation direction (in degrees) estimated by second contour (available only for homogeneous, isotropic elastic materials).
J-integral value estimated from stress intensity factors of second contour.
Etc.

1996 T-stress values

Crack number.
Node set (A8 format).
Number of contours.
T-stress value estimated by first contour.
T-stress value estimated by second contour.
Etc.