Integrated FEM-DBEM simulation of crack propagation in AA2024-T3 FSW butt joints considering manufacturing effects

Mads Rostgaard Sonne, P. Carlone, R. Citarella, Jesper Henri Hattel

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

This paper deals with a numerical and experimental investigation on the influence of residual stresses on fatigue crack growth in AA2024-T3 friction stir welded butt joints. An integrated FEM-DBEM procedure for the simulation of crack propagation is proposed and discussed. A numerical FEM model of the welding process of precipitation hardenable AA2024-T3 aluminum alloy is employed to infer the process induced residual stress field. The reliability of the FEM simulations with respect to the induced residual stresses is assessed comparing numerical outcomes with experimental data obtained by means of the contour method. The computed stress field is transferred to a DBEM environment and superimposed to the stress field produced by a remote fatigue traction load applied on a friction stir welded cracked specimen. Numerical results are compared with experimental data showing good agreement and highlighting the predictive capability of the proposed method. Furthermore, the influence of the residual stress distribution on crack growth is evidenced.
Original languageEnglish
JournalKey Engineering Materials
Volume651-653
Pages (from-to)877-882
ISSN1013-9826
DOIs
Publication statusPublished - 2015
Event18th International ESAFORM Conference on Material Forming - Graz, Austria
Duration: 15 Apr 201517 Apr 2015
Conference number: 18
http://www.esaform2015.at/

Conference

Conference18th International ESAFORM Conference on Material Forming
Number18
CountryAustria
CityGraz
Period15/04/201517/04/2015
Internet address

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