Abstract
As already said earlier, a primary loading for the fuselage skin is hoop tension. However, the total effect of pressurization is a combination of hoop and longitudinal tension and local out-of-plane bending of the skin, the so-called pillowing. Besides the circumferential pillowing between the stiffeners shown in Fig. 2.1a, pressurization also causes a longitudinal pillowing of the skin and stringers between the frames, Fig. 2.1b. Because the stringers hardly restrain the skin pillowing, this effect will be strongly dependent on the type of the stringer-frame connection, for example the shear-tied frame or “floating” frame, cf. Figs. 1.2 and 1.3. Due to the pillowing, the hoop stress is not uniformly distributed between the frames. The loading complexity is additionally increased by the tear straps. A comparison between the measured and predicted (from FE analysis) membrane hoop stresses in a panel typical for the Boeing narrow-body fuselage airplane is shown in Fig. 2.2. The structure consists of “floating” frames and riveted tear straps. The data are for the location along an axial line adjacent to the lap joint. The stresses are normalized by the nominal hoop stress in an equivalent unstiffened cylinder of the same radius R and lap joint skin thickness t. The maximum stress equal to 80% of the nominal stress occurs midway between the tear straps, while the stresses in the vicinity of the tear straps are much lower.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Fawaz, S.A.: Fatigue crack growth in riveted joints. Ph.D. thesis, TU Delft, Delft (1997)
Furuta, S., Terada, H., Sashikuma, H.: Fatigue strength of fuselage joint structures under ambient and corrosive environment. In: Cook, R., Poole, P. (eds.) Proceedings of 19th ICAF Symposium, Fatigue in New and Ageing Aircraft, Edinburgh, Scotland, 18–20 June 1997, pp. 231–249. EMAS, Warley (1997)
Hartman, A.: Fatigue tests on single lap joints in clad 2024-T3 aluminium alloy manufactured by a combination of riveting and adhesive bonding. Report NLR M.2170. NLR, Amsterdam (1966)
Hertel, H.: Ermüdungsfestigkeit der Konstruktionen. Springer, Berlin/Heidelberg/New York (1969)
Klaassen, W.: The fatigue diagram for fluctuating tension of single lap joints of clad 24 ST and 75 ST aluminum alloy with 2 rows of 17 S rivets. Report NLR M.1980. NLR, Amsterdam (1955)
Mayville, R.A., Warren, T.J.: A laboratory study of fracture in the presence of lap splice multiple site damage. In: Atluri, S.N., Atluri, S.N., Sampath, S.G., Tong, P. (eds.) Structural Integrity of Aging Airplanes, pp. 263–273. Springer, Berlin (1991)
Miller, M., Gruber, M.L., Wilkins, K.E, Worden, R.E.: Full-scale testing and analysis of fuselage structure. In: Harris, Ch.E. (ed) Proceedings of FAA/NASA International Symposium on Advanced Structural Integrity Methods for Airframe Durability and Damage Tolerance, Hampton, VA, 4–6 May 1994. NASA CP 3274, pp. 481–496 (1994)
Molent, L., Jones, R.: Crack growth and repair of multi-site damage of fuselage lap joints. Eng. Fract. Mech. 44, 627–637 (1993)
Müller, R.P.G.: An experimental and analytical investigation on the fatigue behaviour of fuselage riveted lap joints. The significance of the rivet squeeze force, and a comparison of 2024-T3 and Glare 3. Ph.D. thesis, TU Delft, Delft (1995)
Schijve, J.: Fatigue of Structures and Materials, 2nd edn. Springer, Dordrecht/Heidelberg/London/New York (2009a) (with CD-Rom)
Schijve, J.: Fatigue damage in aircraft structures, not wanted, but tolerated? Int. J. Fatigue 31, 998–1011 (2009b)
Schmidt, H.-J., Brandbecker, B.: The effect of environmental conditions and load frequency on the crack initiation life and crack growth in aluminium structure. In: Bigelow, C.A. (ed.) Proceedings of FAA/NASA Symposium on Continued Airworthiness of Aircraft Structures, Atlanta, GA, 28–30 Aug 1996, DOT/FAA/AR-97/1, pp. 171–182 (1997)
Schütz, W.: Zeitfestigkeit einschnittiger Leichtmetall-Nietverbindungen. Bericht Nr. F-47. Laboratorium für Betriebsfestigkeit, Darmstadt (1963)
Terada, H.: Structural fatigue and joint degradation. Int. J. Fatigue 23, 21–30 (2001)
Vlieger, H.: Results of uniaxial and biaxial tests on riveted fuselage lap joint specimens. In: Harris, Ch.E (1994) Proceedings of FAA/NASA International Symposium of Advanced Structural Integrity Methods for Airframe Durability and Damage Tolerance, Hampton, VA, 4–6 May 1994. NASA CP 3274, pp. 911–930 (1994)
Vlieger, H., Ottens, H.H.: Uniaxial and biaxial tests on riveted fuselage lap joint specimens. Report NLR CR 97319 L. NLR, Amsterdam (1998)
Wanhill, R.J.H., Koolloos, M.F.J.: Fatigue and corrosion in aircraft pressure cabin lap splices. Int. J. Fatigue 23(Suppl. 1), 337–347 (2001)
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 2012 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Skorupa, A., Skorupa, M. (2012). Differences Between the Fatigue Behaviour of Longitudinal Lap Joints in a Pressurized Fuselage and Laboratory Lap Joint Specimens. In: Riveted Lap Joints in Aircraft Fuselage. Solid Mechanics and Its Applications, vol 189. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-4282-6_2
Download citation
DOI: https://doi.org/10.1007/978-94-007-4282-6_2
Published:
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-007-4281-9
Online ISBN: 978-94-007-4282-6
eBook Packages: EngineeringEngineering (R0)