ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Accurate stress intensity solutions for multiple site damage (MSD) cracks in rivetedstiffened panels are difficult to determine due to geometric complexity along with variations in rivetload transfer and corrosion, especially the interaction of MSD cracks. A methodology was proposedfor efficiently depicting rivet in stiffened panel using finite elements. Rivet material properties weredetermined based on an empirical force-displacement relationship, for highly refined rivet model aswell as for idealized spring element representations of rivets. Parametric studies of panels with amiddle crack and a central stiffener indicate that rivets can provide comparable load transfer andrelative displacement if the rivets closed to the crack are explicit modeled. Using idealizedcombination of explicitly and spring element representations of rivets, the stress intensity factors(SIFs) for uncorroded and corroded one-bay stiffened panels were predicted. The results show that theeffect of MSD and thinning of the sheet is to increase substantially SIFs values compare to that of asingle crack without corrosion. But the SIF is insensitive to corrosion of stiffener. The particular rivetmaterial has relatively little effect on SIF values, while the rivet diameter has a significant effect
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.957.pdf
