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
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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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