Creep elastic follow-up factors under combined primary and secondary stresses

Kuk Hee Lee, Yun Jae Kim, Dong Wook Jerng, Robert A. Ainsworth, Dave Dean

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper presents elastic-creep finite element analyses for smooth and notched plane strain beams and axi-symmetric pipes subject to combined primary and secondary stresses. The relative magnitudes of the primary and secondary stresses are systematically varied. Elastic follow-up factors, which quantify the effect of the primary stress on creep relaxation behaviour of the secondary stress, are extracted as a function of the relative magnitude of the primary and secondary stresses. It is found that elastic follow-up factors due to the secondary stress are affected by the magnitude of the primary stress, and the presence of the primary stress can significantly increase elastic follow-up factors.

Original languageEnglish
Pages (from-to)12-22
Number of pages11
JournalInternational Journal of Pressure Vessels and Piping
Volume101
DOIs
Publication statusPublished - 2013 Jan

Keywords

  • Beam
  • Combined primary and secondary load
  • Creep elastic follow-up factor
  • Pipe

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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