Study of stress intensity factor in corrugated plate using extended finite element method (XFEM)‎

الملخص EN

The presence of crack with different lengths and locations in structure of corrugated plate is studied.

XFEM is along with enrichment function based on partition of unity is used for the calculation of stresses due to the presence of crack.

Stress intensity factors (KI) and relations for shape factors (C) are calculated for the four most common crack orientations and loading conditions.

Results showed that crack in the flange with load perpendicular to corrugation direction yields higher values of KI and C in addition to wider spread of stress concentration contours than the web.

When loading becomes parallel to corrugation direction, the stress intensity factor and C factor become remarkably less due to the corrugation stiffness.

Third mode KIII is appeared in the fourth case in addition to the presence of the first mode KI due to 45o inclination of the web and applied load direction