High cycle fatigue assessment of steel load-carrying cruciform welded joints: an overview of recent results

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Published Sep 23, 2018
DOI https://doi.org/10.3221/IGF-ESIS.46.10

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song wei
Harbin institute of Technology
Xuesong Liu
State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China.

Abstract

In this paper, high cycle fatigue failure behavior of Load-carrying Cruciform Welded Joints (LCWJ) is assessed using Strain Energy Density (SED) approach. Different analytical solutions are proposed and applied to illustrate the effects of LCWJ geometry under cycle tension and bending according to Finite Element (FE) calculation. The Notch Stress Intensity Factors (NSIF) according to the proposed analytical solutions are validated by comparing finite element data from several simulations in terms of LCWJ models, resulting in a good agreement. A bulk of experimental data taken from tests and the literature is assessed by the proposed solutions as the forms of SED, NSIF and peak stress. The results show that the SED-based analytical solutions for steel LCWJ are effective for high cycle fatigue failure analyses.

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Issue
Vol. 12 No. 46 (2018): October 2018
Section
SI: Developments in the fracture and fatigue assessment of materials

How to Cite

wei, song and Liu, X. (2018) “High cycle fatigue assessment of steel load-carrying cruciform welded joints: an overview of recent results”, Frattura ed Integrità Strutturale, 12(46), pp. 94–101. doi: 10.3221/IGF-ESIS.46.10.

Copyright 
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.  

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