Fatigue assessment of high strength steel welded joints under bending loading

Myeong Woo Lee, Yun-Jae Kim, Jun Hyub Park

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this study, a fatigue assessment method for vehicle suspension systems having welded geometries was established under a bending loading condition. For the fatigue life estimation of the actual product's welded joints made of different steels, bending fatigue tests were performed on welded specimens with a simplified shape for obtaining the moment-fatigue-life plot. Further, geometry modeling of the simplified welded specimens was conducted. Results of finite element analysis were used to obtain the stress-fatigue-life plot. The analysis results were also used to calculate the stress concentration factors for notch-factor-based fatigue life estimation. The test results were compared with results of the general notch-factor-based fatigue life estimation for improving fatigue assessment. As a result, it was concluded that both the welded fatigue tests and the notch-factor-based fatigue life estimation are necessary for accurate fatigue assessment.

Original languageEnglish
Pages (from-to)1163-1169
Number of pages7
JournalTransactions of the Korean Society of Mechanical Engineers, A
Volume38
Issue number10
DOIs
Publication statusPublished - 2014 Oct 1

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High strength steel
Welds
Fatigue of materials
Vehicle suspensions
Geometry
Stress concentration
Finite element method
Steel

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Fatigue assessment of high strength steel welded joints under bending loading. / Lee, Myeong Woo; Kim, Yun-Jae; Park, Jun Hyub.

In: Transactions of the Korean Society of Mechanical Engineers, A, Vol. 38, No. 10, 01.10.2014, p. 1163-1169.

Research output: Contribution to journalArticle

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