Abstract
A hybrid finite element method is described herein for the calculation of the crack tip stress intensity and stiffner stress concentration factors of a stiffened structure. Such a calculation is necessary for designing damage-tolerant structure of modern transportation vehicles. The results for the relationship between the crack tip stress intensity factor and stiffner stress are described to demonstrate the arrest of crack propagation. The present approach combines the versatility of the regular finite element method and the efficiency and accuracy of analytical solution.
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