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- Title
Stress relaxation and creep response simulation of P92 steam piping under different loading conditions.
- Authors
Salifu, S.; Desai, D.; Kok, S.; Ogunbiyi, O.; Oketola, A.; Cipriano, I.
- Abstract
In a quest to drastically reduce the cost of production of electrical energy and the dire need to meet the increasing demand for electricity, power generation steam pipings are exposed to different steam loading conditions. The different daily loading conditions/cycles are known to impact the creep behaviour and the pattern of stress relaxation in the steam piping., the creep response and stress relaxation of P92 steam piping subjected to different loading conditions were simulated using a finite element (FE) technique Abaqus CAE/2020 was used to estimate the creep behaviour and stress relaxation of the piping while fe-safe/Turbolife was used in the computation of the creep damage and useful life of the pipe. Comparing the different conditions of operation, faster or swifter stress relaxation and higher creep strain were observed in the piping subjected to steady-state in relation to the analyses encompassing cyclic loadings. The piping's useful creep life when subjected to cyclic loading is lower than that obtained when subjected to steady-state analysis. Thus, any form of cyclic loading of steam piping greatly reduces its useful creep life.
- Publication
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie, 2022, Vol 41, Issue 1, p64
- ISSN
0254-3486
- Publication type
Article
- DOI
10.36303/satnt.2022.41.1.927e