Very low cycle fatigue life evaluation models and validation using notched compact tension test data

Jong Min Lee, Yun Jae Kim, Jin Weon Kim

Research output: Contribution to journalArticlepeer-review

Abstract

Strain-based and energy-based model are proposed for the evaluation of very-low cycle fatigue life considering multi-axial stress states. In the strain-based model, based on void growth and shrinkage, the void shrinkage ratio is proposed as a function of the plastic strain range. The energy-based model is developed by considering stress triaxiality in the relationship between fatigue life and fracture strain energy. For validation, two models are determined using smooth and notched bar tensile test and best-fit fatigue life curves of SA508 Gr.3 and TP316L. Fatigue lives predicted by both models are within 85% of experimental values in all cases.

Original languageEnglish
Article number106635
JournalInternational Journal of Fatigue
Volume155
DOIs
Publication statusPublished - 2022 Feb

Keywords

  • Finite element analysis
  • Notched C(T) test
  • Very low cycle fatigue life evaluation

ASJC Scopus subject areas

  • Modelling and Simulation
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Fingerprint

Dive into the research topics of 'Very low cycle fatigue life evaluation models and validation using notched compact tension test data'. Together they form a unique fingerprint.

Cite this