Shakedown analysis of pressure pipeline with an oblique nozzle at elevated temperatures using the Linear Matching Method

Gong, Jian-Guo and Niu, Tian-Ye and Chen, Haofeng and Xuan, Fu-Zhen (2018) Shakedown analysis of pressure pipeline with an oblique nozzle at elevated temperatures using the Linear Matching Method. International Journal of Pressure Vessels and Piping, 159. pp. 55-66. ISSN 0308-0161 (https://doi.org/10.1016/j.ijpvp.2017.11.008)

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Abstract

There are many power plant components operating at elevated temperatures, subjected to the combined mechanical and thermal loading conditions. The shakedown problem is an important topic for the safe operation of these high temperature components. This work mainly addresses the shakedown analysis of the pressure pipeline with an oblique nozzle at elevated temperatures using the Linear Matching Method (LMM). Parametric studies on main factors affecting the shakedown boundary are conducted. The results indicate that the LMM analysis tool is adequate to identify the shakedown boundary of the component, verified by the ABAQUS step-by-step analysis. Regarding to the angle of the oblique nozzle, the ratchet limit is enhanced with the increasing angle, while the reverse plasticity limit increases until a maximum value is reached, and then presents a certain decrease. This implies that designers should make some compromises on the limit load and reverse plasticity limit when determining an economic angel of the oblique nozzle. In addition, parametric studies demonstrate that the diameter-to-thickness ratios of the oblique nozzle and the main pipe have a remarkable effect on the reverse plasticity and ratchet limit of the component.

ORCID iDs

Gong, Jian-Guo, Niu, Tian-Ye, Chen, Haofeng ORCID logoORCID: https://orcid.org/0000-0001-6864-4927 and Xuan, Fu-Zhen;
  • Item type:Article
    ID code:62355
    Dates:
    Date
    Event
    1 January 2018
    Published
    21 November 2017
    Published Online
    13 November 2017
    Accepted
    29 July 2017
    Submitted
    Notes:© 2017 Elsevier Ltd. All rights reserved. Jian-Guo Gong, Tian-Ye Niu, Haofeng Chen, Fu-Zhen Xuan, Shakedown analysis of pressure pipeline with an oblique nozzle at elevated temperatures using the linear matching method, International Journal of Pressure Vessels and Piping, Volume 159, 2018, Pages 55-66, https://doi.org/10.1016/j.ijpvp.2017.11.008
    Subjects:Technology > Mechanical engineering and machinery
    Department:Faculty of Engineering > Mechanical and Aerospace Engineering
    Depositing user: Pure Administrator
    Date deposited:15 Nov 2017 11:22
    Last modified:17 Nov 2024 01:13
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/62355
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