Assessing the equivalent spring modelling method of CFS elements encased in ultra-lightweight concrete

• Autorzy: Alabedi Ahmed , Hegyi Péter

Identyfikatory

DOI

10.24425/bpasts.2024.151384

• Języki publikacji: EN

Abstrakty

EN

An efficient finite element approach was recently developed to analyze encased cold-formed steel (CFS) structures. This new technique replaced encasing material with unidirectional springs, analogous to the Winkler foundation concept, to shorten the analysis time while ensuring accuracy and reliability in predicting the structural behaviour of encased CFS components. In this paper, the validity, and limitations of the simplified spring model to represent outstanding plates were assessed. The investigation demonstrated that the simplified spring model could effectively predict the ultimate load for a wide range of ultra-lightweight concrete moduli (50–250 MPa) with an acceptable error. The analysis indicated that plate elements initially in cross-section class 4 without encasing material become at least class 3, or better as a consequence of encasing. Previously reported experiments were used to evaluate the performance of the ESM. The analysis demonstrated that the ESM can accurately predict the local failure ultimate load of encased CFS sections with an acceptable error percent and significantly less computational effort than a 3D solid model.

Słowa kluczowe

EN

plate buckling; numerical analysis; equivalent spring model; sustainability

PL

analiza numeryczna; rozwój zrównoważony; wyboczenie płyt; model sprężysty równoważny

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2025
• Tom: Vol. 73, nr 1
• Strony: art. no. e151384
• Opis fizyczny: Bibliogr. 33 poz., rys., tab., wykr.

Twórcy

autor

Alabedi Ahmed

• Department of Structural Engineering, Budapest University of Technology and Economics, Hungary

• https://orcid.org/0000-0002-8017-403X

autor

Hegyi Péter

• Department of Structural Engineering, Budapest University of Technology and Economics, Hungary

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).