Residual Stress Effects in Stiffened Structures - An Alternative Approach

Abstract:

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The fatigue crack growth behavior in integrally stiffened, welded panels is influenced by residual stresses caused by the welding process. The paper presents a semi-numerical method for the determination of stress intensity factors, taking into account the residual stresses in such a way that the relaxation of the residual stresses during the crack propagation phase is covered. This approach is different from the one presented in [1].

Info:

Periodical:

Key Engineering Materials (Volumes 417-418)

Edited by:

M.H Aliabadi, S. Abela, S. Baragetti, M. Guagliano and Han-Seung Lee

Pages:

757-760

DOI:

10.4028/www.scientific.net/KEM.417-418.757

Citation:

P. Horst and S. M. Häusler, "Residual Stress Effects in Stiffened Structures - An Alternative Approach", Key Engineering Materials, Vols. 417-418, pp. 757-760, 2010

Online since:

October 2009

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Price:

$38.00

[1] Häusler, S., Horst, P., Fast Analytical Algorithm for Fatigue Crack Life Estimations of Integrally Stiffened Metallic Panels, Seoul, Korea, 9-11 Sept. 2008, Key Engineering Materials, Vols. 385-387, pp.529-532, (2008).

DOI: 10.4028/www.scientific.net/kem.385-387.529

[2] Terada, H., Nakajima, T., Analysis of stress intensity factor of a crack approaching welding bead. International Journal of Fracture, 27: 83-90, (1985).

[3] Tada, H., Paris, P.C.,. The stress intensity factor for a crack perpendicular to the welding bead. International Journal of Fracture, 21: 279-284, (1983).

DOI: 10.1007/bf00942346

[4] Swift, T., Damage tolerance analysis of redundant structures. In Fracture Mechanics Design Methodology, AGARD-LS-97, (1979).

[5] Nishimura, T., Stress intensity factors for a cracked stiffened sheet with cracked stiffeners. Journal of Engineering Materials and Technology, 113: 119-124, (1991).

DOI: 10.1115/1.2903366

[6] Häusler, S.M., Reim, A.D., Horst, P., Fatigue crack growth - a challenge for new integrally stiffened aircraft structures. In Proceedings of the 24th ICAF Symposium, Naples, (2007).

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