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Optimal Shakedown of the Thin-Wall Metal Structures Under Strength and Stiffness Constraints

Author(s): (University of Zielona Gora , Zielona Góra , Poland)
(Vilnius Gediminas Technical University , Vilnius , Lithuania)
Medium: journal article
Language(s): English
Published in: Civil and Environmental Engineering Reports, , n. 2, v. 25
Page(s): 25-41
DOI: 10.1515/ceer-2017-0018
Abstract:

Classical optimization problems of metal structures confined mainly with 1st class cross-sections. But in practice it is common to use the cross-sections of higher classes. In this paper, a new mathematical model for described shakedown optimization problem for metal structures, which elements are designed from 1st to 4th class cross-sections, under variable quasi-static loads is presented. The features of limited plastic redistribution of forces in the structure with thin-walled elements there are taken into account. Authors assume the elastic-plastic flexural buckling in one plane without lateral torsional buckling behavior of members. Design formulae for Methods 1 and 2 for members are analyzed. Structures stiffness constrains are also incorporated in order to satisfy the limit serviceability state requirements. With the help of mathematical programming theory and extreme principles the structure optimization algorithm is developed and justified with the numerical experiment for the metal plane frames.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.1515/ceer-2017-0018.
  • About this
    data sheet
  • Reference-ID
    10705309
  • Published on:
    19/02/2023
  • Last updated on:
    19/02/2023
 
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