Mixed mode fatigue growth of curved cracks emanating from fastener holes in aircraft lap joints

J. H. Park, S. N. Atluri

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

The finite element alternating method is extended further for analyzing multiple arbitrarily curved cracks in an isotropic plate under plane stress loading. The required analytical solution for an arbitrarily curved crack in an infinite isotropic plate is obtained by solving the integral equations formulated by Cheung and Chen (1987a, b). With the proposed method several example problems are solved in order to check the accuracy and efficiency of the method. Curved cracks emanating from loaded fastener holes, due to mixed mode fatigue crack growth, are also analyzed. Uniform far field plane stress loading on the plate and sinusoidally distributed pin loading on the fastener hole periphery are assumed to be applied. Small cracks emanating from fastener holes are assumed as initial cracks, and the subsequent fatigue crack growth behavior is examined until long arbitrarily curved cracks, are formed near the fastener holes under mixed mode loading conditions.

Original languageEnglish
Pages (from-to)477-482
Number of pages6
JournalComputational Mechanics
Volume21
Issue number6
DOIs
StatePublished - 1998

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