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Engineering approach to modelling the multiaxial creep and damage behaviour of compact tension geometry specimens of a 12 Cr steel at 550° C
Author(s) -
Gaudig Wolfgang
Publication year - 2000
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.200001227
Subject(s) - creep , materials science , cavitation , finite element method , structural engineering , tension (geology) , constant (computer programming) , displacement (psychology) , hardening (computing) , strain hardening exponent , composite material , mechanics , engineering , ultimate tensile strength , computer science , physics , layer (electronics) , psychology , psychotherapist , programming language
Theoretical creep equations including tertiary creep were determined by fitting uniaxial constant load creep test results. Additionally, a new strain/time hardening rule was established. This theoretical approach was implemented in a finite‐element routine, and the load line displacement of a Cs20‐specimen of a 12 Cr steel under constant load was calculated as a function of time. The results were compared to experimental findings and correlated with creep damage by cavitation.