On the creep fatigue and creep rupture behaviours of 9-12% Cr steam turbine rotor

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Zhu, Xuanchen and Chen, Haofeng and Xuan, Fuzhen and Chen, Xiaohui (2019) On the creep fatigue and creep rupture behaviours of 9-12% Cr steam turbine rotor. European Journal of Mechanics - A/Solids, 76. pp. 263-278. ISSN 0997-7538 (https://doi.org/10.1016/j.euromechsol.2019.04.017)

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Abstract

This paper presents the study of creep-fatigue interaction damage and creep rupture limit for 9-12% Cr steam turbine rotor under coupled cyclic thermal-mechanical loadings that alter in phase and out of phase. The investigation is implemented using the Linear Matching Method (LMM) and based on the newly developed creep-fatigue and creep rupture evaluation procedures. Latest experimental creep data of FB2 which belongs to 9-12% Cr heat-resistant steel family is employed to calculate creep-related damage and creep rupture bearing capacity of steam turbine rotor. Various factors that affect creep and fatigue damage of steam turbine rotor are analyzed and discussed, including dwell period and rotating speed of rotor. From the parametric studies, the damage locations and cycles to failure induced by creep and fatigue mechanism are presented respectively. Moreover, through creep rupture analyses for varying desired fracture time, the novel creep rupture curves under multi-type double-cyclic-loading conditions are given and further compared with cyclic plasticity failure curve. These surrogate-model analyses offer a deep understanding of structural responses of steam turbine rotor under long-term high temperature operation and provide critical loading conditions to be referenced for smooth running.

ORCID iDs

Zhu, Xuanchen, Chen, Haofeng ORCID logoORCID: https://orcid.org/0000-0001-6864-4927, Xuan, Fuzhen and Chen, Xiaohui;
  • Item type:Article
    ID code:67691
    Dates:
    Date
    Event
    1 August 2019
    Published
    7 May 2019
    Published Online
    19 April 2019
    Accepted
    28 January 2019
    Submitted
    Notes:© 2019 Elsevier Masson SAS. All rights reserved. Xuanchen Zhu, Haofeng Chen, Fuzhen Xuan, Xiaohui Chen, On the creep fatigue and creep rupture behaviours of 9–12% Cr steam turbine rotor, European Journal of Mechanics - A/Solids, Volume 76, 2019, Pages 263-278, https://doi.org/10.1016/j.euromechsol.2019.04.017
    Subjects:Technology > Mechanical engineering and machinery
    Department:Faculty of Engineering > Mechanical and Aerospace Engineering
    Depositing user: Pure Administrator
    Date deposited:03 May 2019 13:44
    Last modified:05 Dec 2024 02:08
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/67691
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