Numerical Analysis of Fatigue Life and strength of AA5052 Aluminum Alloy Reinforced with ZrO2, TiO2 and Al2O3 Nanoparticles

Baqir Ibraheem; Salem  F. Salman; Abduljabar  H. Ali

doi:10.24237/djes.2022.15208

Authors

Baqir Ibraheem
baqirabed.ba@gmail.com
Department of Mechanical Engineering, University of Diyala, 32001 Diyala, Iraq
Salem F. Salman Department of Mechanical Engineering, University of Diyala, 32001 Diyala, Iraq
Abduljabar H. Ali Biomedical Engineering Department, Al-Khwarizmi College of Engineering. University of Baghdad, Iraq

Keywords:

Fatigue, AA5052, Composite, Constant loading

Abstract

In this study, the finite element method using ANSYS workbench 16.1 has been successfully used to predict the fatigue life, fatigue strength, and the factors of safety for the as cast AA5052 as arrow matrix and its composites: AA5052/7 wt% ZrO₂, AA5052/7 wt% TiO₂ and AA5052/7 wt% Al₂O₃. The Finite Element Analysis (FEA) model was building according to dimensions of the experimental fatigue specimen. The total number of elements was 504 elements with a total number of nodes of 2572 nodes. The numerical fatigue test was processed under static structural analysis, and it has been analyzed using fatigue tool on ANSYS, Goodman theory was used for the prediction of life. The FEM using ANSYS.16.1 workbench simulation showed a good agreement with the experimental results for all the stress life curves and the highest difference in fatigue life was 17% and the lowest was 1.4%, for ZrO₂ composite, while the maximum overall average error was 2.031% for AA5052 and the lowest was 0.378%, for Al₂O₃composite. The maximum difference about 4.14 % between the experimental and numerical fatigue strength at 107 cycles for the row matrix and less than for the composites, also the minimum factor of safety for the AA5052 alloy is 0.8327 and for AA5052/7 wt% ZrO₂ composite is 1.0709 while for both AA5052/7wt%TiO₂ and AA5052/7 wt% Al₂O₃ composites are 1.0707 at specific design life.

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