General estimation equation of transient C(t) under load and displacement control

Han Sang Lee, Dong Jun Kim, Jin Ho Je, Yun Jae Kim, Robert A. Ainsworth, Peter J. Budden

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


This paper propose estimation equations of transient C(t)-integrals for general material properties where plastic and creep stress exponent are different under load and displacement control. The new equations are made by modifying the plasticity correction term in the existing equations. The modified plasticity corrections term is expressed in terms of initial elastic-plastic and steady state creep stress fields. For validation, elastic-plastic-creep finite element analysis are performed. FE results are compared with predicted C(t) results using proposed equations. Good agreement with FE results is found even when plastic and creep stress exponents are different.

Original languageEnglish
Pages (from-to)817-824
Number of pages8
JournalProcedia Structural Integrity
Publication statusPublished - 2016
Externally publishedYes


  • Crack-tip stress fields
  • Elastic-plastic-creep
  • Load and displacement control
  • Transient C(t)-integrals

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Materials Science(all)
  • Civil and Structural Engineering


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