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:
Reducing structural weight is one of the major ways to improve aircraft performance.Lighter and/or stronger materials allow greater range and speed and may also contribute to reducingoperational costs. Nowadays composite materials are widely used in “primary” structuralcomponents such as fuselage, for which contrasting requirements like lightness and structuralstrength are required, so particular attention is necessary during its design. In this paper a compositefront bulkhead, subjected to ultimate pressure load, was examined. The front bulkhead is made of acomposite skin, stiffened with seven vertical stiffeners linked through metallic fittings; the wholesystem is joined to the fuselage by rivets. A Finite Element model was established: the usedelements were four nodes shells, simulating composite layers, and two nodes bar elements,simulating rivets; the structure was clamped and a pressure load was applied to the skin. A linearstatic stress analysis was performed to calculate strains in particular points in which strain gauges orrosettes are placed: the numerical results, compared with experimental ones, show a good degree ofcorrelation. Stress calculations were performed in order to verify the front and rear bulkheadstructural safety
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.553.pdf
Permalink