Experimental study of the nonlinear behaviour of deep-sea mooring polyester fibre ropes

• Autorzy: Zhang He , Zeng Ji , Jin Bowen , Chou Chiate , Li Hangyu , Dong Hailei

Identyfikatory

DOI

10.2478/pomr-2023-0048

• Języki publikacji: EN

Abstrakty

EN

Mooring ropes are essential components of ships and offshore floating structures and they are subjected to cyclic axial loads. This study investigates the evolution of the full-cycle stiffness of fibre polyester ropes under long-term static and dynamic loading. First, the static stiffness characteristics of the ropes, including the rope elongation properties at different stages, shrinkage rates, and creep coefficients after an idle period, are examined under static loads; an empirical formula for static stiffness is established. Second, the dynamic stiffness characteristics of the ropes are investigated under cyclic loads that are typical of platform production operations. The stabilities of the structure under different tensions are compared; the effects of mean tension, tension amplitude, and load cycle on the dynamic stiffness of the ropes are analysed and an empirical formula is established to predict the dynamic stiffness during the engineering design phase. The results of this study can be helpful for the rational design of deep-sea taut-leg mooring systems because they present the evolution of the full-cycle stiffness characteristics of mooring ropes.

Słowa kluczowe

EN

polyester fibre ropes; static stiffness; creep coefficient; long-term cyclic loads; dynamic stiffness

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2023
• Tom: nr 3
• Strony: 153--162
• Opis fizyczny: Bibliogr. 24 poz., rys., tab.

Twórcy

autor

Zhang He

• Merchant Marine College, Shanghai Maritime University, Shanghai, China

• https://orcid.org/0000-0002-1209-0352

autor

Zeng Ji

• College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai, China

autor

Jin Bowen

• Merchant Marine College, Shanghai Maritime University, Shanghai, China

autor

Chou Chiate

• Zhejiang Four Brothers Rope Co. Ltd., Taizhou, China

autor

Li Hangyu

• Zhejiang Four Brothers Rope Co. Ltd., Taizhou, China

autor

Dong Hailei

• Zhejiang Four Brothers Rope Co. Ltd., Taizhou, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).