aalto1 untyped-item.component.html
High-cycle fatigue simulation of notched steel details utilizing Smith-Watson-Topper model and combined isotropic-kinematic hardening rules
Loading...
URL
Journal Title
Journal ISSN
Volume Title
School of Engineering |
Master's thesis
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Authors
Date
Department
Major/Subject
Mcode
Degree programme
Language
en
Pages
54
Series
Abstract
In real-life structural applications, for unwelded steel components, the fatigue crack initiation life is typically considered as most of the overall fatigue life, which is essential for the evaluation of structural performance. Therefore, accurate prediction of this phase of crack is important for maintaining structural integrity. This study presents a developed simplified 2D numerical model based on the Smith-Watson-Topper (SWT) damage model. The developed model focuses on predicting the fatigue crack initiation life of notched steel components which is a common configuration in orthotropic steel deck bridges.
In this study, High-cycle fatigue (HCF) behaviour is evaluated through a combination of numerical simulations and experimental fatigue tests. The Abaqus user subroutine for material damage initiation (UDMGINI) is implemented. The 2D numerical model was validated against experimental results in order to evaluate the consistency and accuracy of the developed simplified 2D numerical model to predict fatigue crack initiation.
Furthermore, this study also includes a comparative analysis between the 2D and three-dimensional (3D) numerical models. This comparison aims to assess the computational efficiency and accuracy of the 2D model.