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Evaluation of component creep behaviour by means of a threshold approach
Author(s) -
Xu Hong,
Maile Karl,
Roos Eberhard
Publication year - 1999
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199905602
Subject(s) - creep , subroutine , component (thermodynamics) , materials science , deformation (meteorology) , structural engineering , nut , computer science , composite material , engineering , physics , thermodynamics , operating system
Creep deformation as well as damage evolution in nut bolt assemblies have been investigated. A damage model was developed, based on a combination of Kachanov theory and critical creep strain threshold. Exceeding the creep strain threshold cause initiation and growth of creep cavities. The model together with a modified Norton‐Bailey creep law was implemented in the user subroutine Creep of the FE code Abaqus. Verification of the computation was done by means of comparison with creep tests of nut bolt assemblies.