کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
567226 | 1452137 | 2015 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Numerical–experimental crack growth analysis in AA2024-T3 FSWed butt joints Numerical–experimental crack growth analysis in AA2024-T3 FSWed butt joints](/preview/png/567226.png)
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. The computational approach is based on the sequential usage of the Finite Element Method (FEM) and the Dual Boundary Element Method (DBEM). Linear elastic FE simulations are performed to evaluate the process induced residual stresses, 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; the crack propagation is then simulated according to a two-parameter growth model. Numerical results have been compared with experimental data showing good agreement and evidencing the predictive capability of the proposed method. The obtained results highlight the influence of the residual stress distribution on crack growth.
Journal: Advances in Engineering Software - Volume 80, February 2015, Pages 47–57