Shakedown analysis of a torispherical head with a piping nozzle under combined loads by the stress compensation method

Peng, Heng and Shen, Jun and Liu, Yinghua and Chen, Haofeng (2019) Shakedown analysis of a torispherical head with a piping nozzle under combined loads by the stress compensation method. International Journal of Pressure Vessels and Piping, 172. pp. 107-118. ISSN 0308-0161 (https://doi.org/10.1016/j.ijpvp.2019.03.028)

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Abstract

Shakedown assessment is an important task in determining the load-bearing capacity of structures and evaluating their safety. The traditional shakedown analyses, which are based on the upper or lower bound shakedown theorem to establish the mathematical programming formulation and solve an optimisation problem, are difficult to apply in engineering practice owing to limitations of the computing scale and computational efficiency. In this study, a numerical shakedown analysis using the recently developed stress compensation method (SCM) is performed for a torispherical head with a piping nozzle, which is a typical structural component of pressure vessel equipment. The loads applied to the structural component include an internal pressure, axial force, twisting moment, out-of-plane and in-plane bending moments, and thermal loading, all of which vary independently of each other. Two- and three-dimensional strict shakedown boundaries for the torispherical head under different combinations of these loads are presented and analysed. In addition, the effect of a temperature-dependent yield strength on the shakedown domain is also investigated. These investigations demonstrate that the proposed SCM is capable of solving the practical shakedown problem for structures under complicated combined loads in industrial applications. The obtained results can provide guidance for the safe structural design of torispherical heads with piping nozzles.

ORCID iDs

Peng, Heng, Shen, Jun, Liu, Yinghua and Chen, Haofeng ORCID logoORCID: https://orcid.org/0000-0001-6864-4927;
  • Item type:Article
    ID code:67381
    Dates:
    Date
    Event
    1 May 2019
    Published
    24 March 2019
    Published Online
    20 March 2019
    Accepted
    17 October 2018
    Submitted
    Notes:© 2019 Elsevier Ltd. All rights reserved. Heng Peng, Jun Shen, Yinghua Liu, Haofeng Chen, Shakedown analysis of a torispherical head with a piping nozzle under combined loads by the stress compensation method, International Journal of Pressure Vessels and Piping, Volume 172, 2019, Pages 107-118, https://doi.org/10.1016/j.ijpvp.2019.03.028
    Subjects:Technology > Mechanical engineering and machinery
    Department:Faculty of Engineering > Mechanical and Aerospace Engineering
    Depositing user: Pure Administrator
    Date deposited:20 Mar 2019 15:20
    Last modified:11 Nov 2024 12:15
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/67381
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