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Buckling curves of stainless steel CHS members: Current state and proposed provisions

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F22%3APU146726" target="_blank" >RIV/00216305:26110/22:PU146726 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.sciencedirect.com/science/article/abs/pii/S0143974X22003923" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0143974X22003923</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.jcsr.2022.107521" target="_blank" >10.1016/j.jcsr.2022.107521</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Buckling curves of stainless steel CHS members: Current state and proposed provisions

  • Original language description

    The study objective is to propose the optimal shape of the flexural buckling curves for stainless steel circular hollow cross-section (CHS) members. It has been pointed out by several researchers, that the currently utilized buckling curves do not fulfil the required structural reliability level, and several provisions have already been proposed. Following this research, our proposals are based on a numerical investigation of the ultimate limit state of geometrically imperfect stainless steel CHS columns of three different material grades (Austenitic 1.4307, Ferritic 1.4003 and Duplex 1.4462) using the statistical characteristics of input initial imperfections, material and geometric parameters. The statistical characteristics are considered according to the results of published research. The first-order reliability method (FORM) supported by the advanced finite element method - geometrically and materially nonlinear imperfect analysis (GMNIA) - is used. The values of the ultimate resis-tance obtained using FORM are compared with the values of the design resistance determined according to the corresponding European standards and are used to determine the optimal shape of flexural buckling curves. Additionally, the influence of linear correlation between the ultimate resistance of CHS stainless steel columns exposed to flexural buckling and input imperfections is discussed. Studies have shown that the maximum effect of initial axial curvature on resistance occurs at higher slenderness compared to carbon steels. The obtained results present provisions to optimize the flexural buckling curves of stainless steel CHS members and could significantly improve the structural efficiency, resulting in material savings, while preserving the required level of structural reliability.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20102 - Construction engineering, Municipal and structural engineering

Result continuities

  • Project

    <a href="/en/project/GA20-00761S" target="_blank" >GA20-00761S: Influence of material properties of stainless steels on reliability of bridge structures</a><br>

  • Continuities

    S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2022

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Constructional Steel Research

  • ISSN

    0143-974X

  • e-ISSN

    1873-5983

  • Volume of the periodical

    198

  • Issue of the periodical within the volume

    107521

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    15

  • Pages from-to

    „“-„“

  • UT code for WoS article

    000858871400002

  • EID of the result in the Scopus database

    2-s2.0-85137154334