Local strain energy density approach to assess the fatigue strength of sharp and blunt V-notches in cast steel

M. Schuscha, M. Leitner, M. Stoschka, G. Meneghetti

Research output: Contribution to journalArticle

Abstract

In this work, the strain energy density approach (SED) is utilized to assess the fatigue strength of circumferential V-notched specimens covering axial loading and rotating bending. Subsequent calculations of the linear-elastic SED lead to a statistical proven accordance among about one-hundred experimental tests, thereby introducing extended H-function values for increased Rc to ρ to values as well. Furthermore, low-cycle fatigue tests are conducted and utilized in an extensive elasto-plastic SED assessment. Thus, the scatter index of the evaluated equivalent strain energy density is reduced towards a ratio of about two. Concluding, the finite-volume-based energy approach provides an engineering-applicable fatigue assessment tool
Original languageEnglish
Article number105334
JournalInternational Journal of Fatigue
Volume132
DOIs
Publication statusPublished - 1 Mar 2020
Externally publishedYes

Keywords

  • Cast steel
  • Elastic strain energy density
  • NSIF
  • Plastic strain energy density
  • V-Notch

ASJC Scopus subject areas

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

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