Records Written for Contour Integrals

This section describes the format of the individual records in the Abaqus results file.

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
  1. Crack number.
  2. Node set (A8 format).
  3. Number of contours.
  4. J-integral value estimated by first contour.
  5. J-integral value estimated by second contour.
  6. Etc.
1992 C​t-integral values
  1. Crack number.
  2. Node set (A8 format).
  3. Number of contours.
  4. C​t-integral value estimated by first contour.
  5. C​t-integral value estimated by second contour.
  6. Etc.
1995 Stress intensity factors
  1. Crack number.
  2. Node set (A8 format).
  3. Number of contours.
  4. KI (Mode I stress intensity factor) estimated by first contour.
  5. KI⁢I (Mode II stress intensity factor) estimated by first contour.
  6. KI⁢I⁢I (Mode III stress intensity factor) estimated by first contour (available only for 3D elements).
  7. Crack propagation direction (in degrees) estimated by first contour (available only for homogeneous, isotropic elastic materials).
  8. J-integral value estimated from stress intensity factors of first contour.
  9. KI (Mode I stress intensity factor) estimated by second contour.
  10. KI⁢I (Mode II stress intensity factor) estimated by second contour.
  11. KI⁢I⁢I (Mode III stress intensity factor) estimated by second contour (available only for 3D elements).
  12. Crack propagation direction (in degrees) estimated by second contour (available only for homogeneous, isotropic elastic materials).
  13. J-integral value estimated from stress intensity factors of second contour.
  14. Etc.
1996 T-stress values
  1. Crack number.
  2. Node set (A8 format).
  3. Number of contours.
  4. T-stress value estimated by first contour.
  5. T-stress value estimated by second contour.
  6. Etc.