Creep rupture limit analysis for engineering structures under high-temperature conditions
Wang, Xiaoxiao and Ma, Zhiyuan and Chen, Haofeng and Liu, Yinghua and Shi, Duoqi and Yang, Jie (2022) Creep rupture limit analysis for engineering structures under high-temperature conditions. International Journal of Pressure Vessels and Piping, 199. 104763. ISSN 0308-0161 (https://doi.org/10.1016/j.ijpvp.2022.104763)
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Abstract
The efficient and accurate prediction of creep rupture limit poses a huge challenge for high-temperature engineering such as aerospace, nuclear and chemical industries. It is important to investigate the applicability of mainstream assessment approaches and related creep rupture failure mechanisms through theoretical and numerical views. In this study, major creep rupture assessment techniques are comparatively investigated for the first time, including the isochronous stress-strain (ISS) curve based creep rupture limit analysis, the Omega creep damage model based creep analysis and the direct method based creep rupture assessment by an extended Linear Matching Method (LMM). New virtual creep test curves are generated from the Omega creep model and chosen as the unified creep source data to derive the key material parameters used for different methods. For proposing a reasonable strategy for evaluating high-temperature structures in terms of creep rupture, the balance between computational efficiency and accuracy is comprehensively analyzed. Through a practical engineering application of a high-temperature pressure vessel component, a profound insight into the techniques of creep rupture evaluation is delivered from different views. Moreover, several assessment curves are built based on a new understanding of creep rupture failure mechanism, with an effective numerical plan to validate the creep rupture boundary illustrated. It is demonstrated that the LMM direct creep rupture analysis is more suitable for calculating the structural creep rupture limit, with both monotonic and cyclic load conditions considered.
ORCID iDs
Wang, Xiaoxiao, Ma, Zhiyuan, Chen, Haofeng ORCID: https://orcid.org/0000-0001-6864-4927, Liu, Yinghua, Shi, Duoqi and Yang, Jie;-
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Item type: Article ID code: 81734 Dates: DateEventOctober 2022Published10 August 2022Published Online25 July 2022AcceptedSubjects: Technology > Mechanical engineering and machinery Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Strategic Research Themes > Ocean, Air and SpaceDepositing user: Pure Administrator Date deposited: 04 Aug 2022 15:58 Last modified: 03 Dec 2024 07:14 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/81734