Estimation of C(t)-integral in transient creep condition for pipe with crack under combined mechanical and thermal stress (II)

Tae Kwang Song, Yun-Jae Kim

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In this paper, the estimation method of C(t)-integral for combined mechanical and thermal loads is proposed for elastic-plastic-creep material via 3-dimensional FE analyses. Plasticity induced by initial loading makes relaxation rate different from those produced elastically. Moreover, the interactions between mechanical and thermal loads make the relaxation rate different from those produced under mechanical load alone. To quantify C(t)-integral for combined mechanical and thermal loads, the simplified formula are developed by modifying redistribution time in existing work done by Ainsworth et al.

Original languageEnglish
Pages (from-to)1065-1073
Number of pages9
JournalTransactions of the Korean Society of Mechanical Engineers, A
Volume33
Issue number10
DOIs
Publication statusPublished - 2009 Oct 1

Fingerprint

Thermal load
Thermal stress
Creep
Pipe
Cracks
Plasticity
Plastics

Keywords

  • C(t)-Integral
  • Combined Mechanical and Thermal Stress
  • Crack
  • Elastic Plastic Creep
  • Transient Creep Condition

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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AB - In this paper, the estimation method of C(t)-integral for combined mechanical and thermal loads is proposed for elastic-plastic-creep material via 3-dimensional FE analyses. Plasticity induced by initial loading makes relaxation rate different from those produced elastically. Moreover, the interactions between mechanical and thermal loads make the relaxation rate different from those produced under mechanical load alone. To quantify C(t)-integral for combined mechanical and thermal loads, the simplified formula are developed by modifying redistribution time in existing work done by Ainsworth et al.

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