Fatigue life evaluation using improved equivalent structural stress incorporating bending residual stress effect

Jin Ha Hwang, Han Sang Lee, Yun-Jae Kim, Youn Il Chung

Research output: Contribution to journalArticle

Abstract

The material properties and fatigue life of a metal can be affected by pre-strain, residual stress, and bending owing to the metal formation process. Therefore, it is important to understand the influence of factors that affect fatigue life. In this research, fatigue tests are conducted using simulated specimens to investigate the effect of the formation on the fatigue life evaluation of an automobile wheel. To evaluate the fatigue test results, the equivalent structural stress method considering bending residual stress is proposed. Then, the proposed equivalent structural stress method is verified by constructing a Master S-N curve.

Original languageEnglish
Pages (from-to)985-992
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, A
Volume42
Issue number11
DOIs
Publication statusPublished - 2018 Nov 1

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Keywords

  • Automotive Wheel
  • Equivalent Structural Stress
  • Fatigue Service Life Evaluation
  • Forming Residual Stress

ASJC Scopus subject areas

  • Mechanical Engineering

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