Please use this identifier to cite or link to this item:
Title: An integrated fatigue assessment approach of rail welds using dynamic 3D FE simulation and strain monitoring technique
Authors: Shi, Xiaopeng
Liu, Yang
Liu, Zhufeng
Hoh, Hsin Jen
Tsang, Kin Shun
Pang, John Hock Lye
Keywords: Engineering::Mechanical engineering
Issue Date: 2021
Source: Shi, X., Liu, Y., Liu, Z., Hoh, H. J., Tsang, K. S. & Pang, J. H. L. (2021). An integrated fatigue assessment approach of rail welds using dynamic 3D FE simulation and strain monitoring technique. Engineering Failure Analysis, 120, 105080-.
Journal: Engineering Failure Analysis 
Abstract: Stress concentration induced by geometry irregularity was found near the weld toe of rail welded joints, leading to high risk of fatigue crack initiation. In this research, an integrated fatigue assessment method of rail welds based on the 3D dynamic finite element method (FEM) and onsite strain monitoring data has been developed. The 3D FEM considering wheel-track interaction has been built and the extracted stress and deformation results was analyzed using an implicit-explicit sequence approach. The FEM model was then validated and calibrated by strain monitoring results on a test track from strain gauges attached near the rail welds. A comprehensive investigation of fatigue behavior for rail welds under the dynamic loading condition has been conducted and it was found that the tensile peaks due to ‘reverse bending’ of the rail have a critical effect on the weld fatigue crack initiation. A further study of fatigue risk assessment using multi-axis fatigue theory revealed that the crack initiation risk is high for head-to-web transition region in gauge side.
ISSN: 1350-6307
DOI: 10.1016/j.engfailanal.2020.105080
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 2020 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles

Citations 50

Updated on May 29, 2023

Web of ScienceTM
Citations 50

Updated on May 28, 2023

Page view(s)

Updated on Jun 2, 2023

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.