| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 297332 | Nuclear Engineering and Design | 2012 | 8 Pages |
A model to calculate the welding temperature and residual stress was built using finite element code ABAQUS, and a subroutine of creep damage was also developed. Based on the coupling of welding residual stress and creep damage, the welding residual stress and creep damage of a tube made of Cr5Mo steel were simulated. This method can obtain the distributions of complex residual stress, creep damage and stress relaxation, which provide a reference for discussing the effect of residual stress on creep damage. The results show that the welding residual stress is very large at initial stage, then it is relaxed in a short time at high temperature. The distribution of creep and damage is mainly decided by the as-welding residual stress. Welding residual stress has a great effect on the creep and damage, which provides a reference for the design and life prediction of high temperature component.
► The work provides a FEM model to calculate welding residual stress and creep damage. ► This method can obtain the distributions of stress and creep strain. ► The work discusses the effect of residual stress on creep damage.
