Experimental and numerical investigations of ultimate strength of imperfect stiffened plates of different slenderness

• Autorzy: Woloszyk Krzysztof , Garbatov Yordan , Kowalski Jakub , Samson Leszek

Identyfikatory

DOI

10.2478/pomr-2020-0072

• Języki publikacji: EN

Abstrakty

EN

The objective of this study is to analyse the behaviour of compressed stiffened plates of different slenderness using experimental and numerical methods. The presented results are part of a long-term project to investigate the ultimate strength of geometrically imperfect structures subjected to different degradation phenomena, including corrosion degradation and locked cracks. Several specimens were subjected to a uniaxial compressive force, and the most important quantities related to the structural behaviour were captured and analysed. A finite element model, accounting for material and geometrical nonlinearities and initial geometrical imperfections, was developed using the commercial software ANSYS. The residual welding-induced stresses were measured in the middle cross-section for two specimens. The initial imperfection was identified by employing a close-range photogrammetry approach. It was concluded that the numerical analyses, based on the finite element model, predict the ultimate strength of stiffened plates accurately, although some deviations were also observed. The detailed analysis with the indication of possible uncertainty is presented, and several conclusions are derived.

Słowa kluczowe

EN

stiffened plate; ultimate strength; FEM; boundary conditions

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2020
• Tom: nr 4
• Strony: 120--129
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Woloszyk Krzysztof

• Gdansk University of Technology, Faculty of Ocean Engineering and Ship Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland

autor

Garbatov Yordan

• Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais , 1049-001 Lisboa, Portugal

autor

Kowalski Jakub

• Gdansk University of Technology, Faculty of Ocean Engineering and Ship Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland

autor

Samson Leszek

• Gdansk University of Technology, Faculty of Ocean Engineering and Ship Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).