Fatigue Crack Growth Modeling in Stiffened Panels Considering Residual Stress Effects

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

Paulo Tavares de Castro (Author) FEUP; P.M.G.P. Moreira (Author) FEUP; S.M.O. Tavares (Author) FEUP; V. Richter-Trummer (Author) FEUP

Conference proceedings International

Title: ADVANCED MATERIALS FORUM V, PT 1 AND 2

Pages: 1172-1177

5th International Materials Symposium/14th Conference of the Sociedade-Portuguesa-de-Materiais

Lisbon, PORTUGAL, APR 05-08, 2009

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 2 Citations

Other information

Authenticus ID: P-003-9XX

DOI: 10.4028/www.scientific.net/msf.636-637.1172

Abstract (EN): A model to determine Stress Intensity Factors (SIFs) and simulate the fatigue crack growth in stiffened structures taking into consideration residual stresses is presented in this paper. The stress field required to estimate the SIF was calculated using the Finite Element Method (FEM) considering the residual stress as an initial condition. The residual stress field redistribution as a function of crack growth is taken into account using the Abaqus software. Specimens without and with residual stresses, resulting from different welding techniques, were considered for the present study. The residual stress fields can significantly deteriorate or improve the fatigue life of the structure, depending upon the location of the initial crack; consequently these effects should be analyzed and modelled in order to better understand the consequences of the application of the considered manufacturing processes.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6