In this work, fatigue crack propagation in thin-walled aluminium alloy structure with two friction stir welded (FSW) joints has been numerically modelled. Crack propagation in unstiffened part of the structure between two FSW joints is analyzed. Numerical method, so-called eXtended Finite Element Method (XFEM) has been used, including software Abaqus, as well as Morfeo, for modelling and results display. Tensile fatigue loading is applied, with stress ratio R=0. The analyzed model is made from aluminium alloy 2024-T351. Material properties in joints zones and geometry measures of FSW joint are adopted from available experiments. Following results are obtained by numerical analysis: stress-displacement state in the structure, where special attention is dedicated to the crack tip zone, coordinates of the crack front (x, y, z) for every propagation step, distributions of stress intensity factors - K-I, K-II, K-III and K-eq along the crack front for each propagation step, structural life i...n form of change of applied number of load cycles, N, for each step of propagation. Besides numerical results, Abaqus provides visualization of crack propagation in the structure. On the basis of obtained data, analysis of crack growth stability is done.
Keywords:
alloy / aluminium alloy / fatigue crack propagation / friction stir welding / structure life / extended finite element method
Source:
20th European Conference on Fracture, 2014, 3, 1330-1335
TY - JOUR
AU - Zivojinović, Danijela
AU - Đurđević, Andrijana
AU - Grbović, Aleksandar
AU - Sedmak, Aleksandar
AU - Rakin, Marko
PY - 2014
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2802
AB - In this work, fatigue crack propagation in thin-walled aluminium alloy structure with two friction stir welded (FSW) joints has been numerically modelled. Crack propagation in unstiffened part of the structure between two FSW joints is analyzed. Numerical method, so-called eXtended Finite Element Method (XFEM) has been used, including software Abaqus, as well as Morfeo, for modelling and results display. Tensile fatigue loading is applied, with stress ratio R=0. The analyzed model is made from aluminium alloy 2024-T351. Material properties in joints zones and geometry measures of FSW joint are adopted from available experiments. Following results are obtained by numerical analysis: stress-displacement state in the structure, where special attention is dedicated to the crack tip zone, coordinates of the crack front (x, y, z) for every propagation step, distributions of stress intensity factors - K-I, K-II, K-III and K-eq along the crack front for each propagation step, structural life in form of change of applied number of load cycles, N, for each step of propagation. Besides numerical results, Abaqus provides visualization of crack propagation in the structure. On the basis of obtained data, analysis of crack growth stability is done.
PB - Elsevier Science Bv, Amsterdam
T2 - 20th European Conference on Fracture
T1 - Numerical modelling of crack propagation in friction stir welded joint made of aluminium alloy
EP - 1335
SP - 1330
VL - 3
DO - 10.1016/j.mspro.2014.06.215
ER -
@article{
author = "Zivojinović, Danijela and Đurđević, Andrijana and Grbović, Aleksandar and Sedmak, Aleksandar and Rakin, Marko",
year = "2014",
abstract = "In this work, fatigue crack propagation in thin-walled aluminium alloy structure with two friction stir welded (FSW) joints has been numerically modelled. Crack propagation in unstiffened part of the structure between two FSW joints is analyzed. Numerical method, so-called eXtended Finite Element Method (XFEM) has been used, including software Abaqus, as well as Morfeo, for modelling and results display. Tensile fatigue loading is applied, with stress ratio R=0. The analyzed model is made from aluminium alloy 2024-T351. Material properties in joints zones and geometry measures of FSW joint are adopted from available experiments. Following results are obtained by numerical analysis: stress-displacement state in the structure, where special attention is dedicated to the crack tip zone, coordinates of the crack front (x, y, z) for every propagation step, distributions of stress intensity factors - K-I, K-II, K-III and K-eq along the crack front for each propagation step, structural life in form of change of applied number of load cycles, N, for each step of propagation. Besides numerical results, Abaqus provides visualization of crack propagation in the structure. On the basis of obtained data, analysis of crack growth stability is done.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "20th European Conference on Fracture",
title = "Numerical modelling of crack propagation in friction stir welded joint made of aluminium alloy",
pages = "1335-1330",
volume = "3",
doi = "10.1016/j.mspro.2014.06.215"
}
Zivojinović, D., Đurđević, A., Grbović, A., Sedmak, A.,& Rakin, M.. (2014). Numerical modelling of crack propagation in friction stir welded joint made of aluminium alloy. in 20th European Conference on Fracture
Elsevier Science Bv, Amsterdam., 3, 1330-1335.
https://doi.org/10.1016/j.mspro.2014.06.215
Zivojinović D, Đurđević A, Grbović A, Sedmak A, Rakin M. Numerical modelling of crack propagation in friction stir welded joint made of aluminium alloy. in 20th European Conference on Fracture. 2014;3:1330-1335.
doi:10.1016/j.mspro.2014.06.215 .
Zivojinović, Danijela, Đurđević, Andrijana, Grbović, Aleksandar, Sedmak, Aleksandar, Rakin, Marko, "Numerical modelling of crack propagation in friction stir welded joint made of aluminium alloy" in 20th European Conference on Fracture, 3 (2014):1330-1335,
https://doi.org/10.1016/j.mspro.2014.06.215 . .
