Fracture mechanics analysis for a mooring system subjected to tension and out-of-plane bending

Xue, Xutian; Chen, N. Z.

doi:10.1088/1757-899x/276/1/012036

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…The main advantages are that the dynamic wake effect and the root and tip losses are inher-Fig. 5 Modelling techniques of an FOWT (Zhou et al 2019;Lemmer et al 2020a;Hall 2015;Masciola 2018;Xue and Chen 2017; National Technical University of Athens 2022; Innosea 2022; Albanesi et al 2017;Boudounit et al 2020;Sturge et al 2015) ently included in the model compared to the BEMT model. However, there are some instabilities in this type of modelling at low wind speeds where the choice of BEMT method would be better.…”

Section: Aerodynamicsmentioning

confidence: 99%

A review of numerical modelling and optimisation of the floating support structure for offshore wind turbines

Faraggiana

Giorgi

Sirigu

et al. 2022

J. Ocean Eng. Mar. Energy

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Compared to onshore wind power, floating offshore wind power is a promising renewable energy source due to higher wind speeds and larger suitable available areas. However, costs are still too high compared to onshore wind power. In general, the economic viability of offshore wind technology decreases with greater water depth and distance from shore. Floating wind platforms are more competitive compared to fixed offshore structures above a certain water depth, but there is still great variety and no clear design convergence. Therefore, optimisation of the floating support structure in the preliminary phase of the design process is still of great importance, often up to personal experience and sensibility. It is fundamental that a suitable optimisation approach is chosen to obtain meaningful results at early development stages. This review provides a comparative overview of the methods, numerical tools and optimisation approaches that can be used with respect to the conceptual design of the support structure for Floating offshore wind turbines (FOWT) attempting to detail the limitations preventing the convergence to an optimal floating support structure. This work is intended to be as a reference for any researcher and developer that would like to optimise the support platform for FOWT.

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Section: Aerodynamicsmentioning

confidence: 99%

A review of numerical modelling and optimisation of the floating support structure for offshore wind turbines

Faraggiana

Giorgi

Sirigu

et al. 2022

J. Ocean Eng. Mar. Energy

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“…Researching the behavior of ship mooring chains on shore has been an important objective for different groups of researchers [13][14][15][16][17][18][19][20][21][22][23][24][25][26]. The static, dynamic, and fatigue stresses occurring in the chain links for different operating conditions were thus highlighted.…”

Section: Introductionmentioning

confidence: 99%

Tensile Behavior of Chain Links Made of Polymeric Materials Manufactured by 3D Printing

et al. 2023

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For reduced mechanical stress, some chains with links made of metallic materials could be replaced by chains made of polymeric materials. A lower weight and a higher corrosion resistance would characterize such chains. From this point of view, research on the behavior of chain links made of polymeric materials under the action of tensile stresses can become important. Modeling by the finite element method highlighted some specific aspects of the behavior of a chain link subjected to tensile stresses. Later, we resorted to the manufacture by 3D printing of some chain links from four distinct polymeric materials, with the modification of the size of the chain link and, respectively, of the values of some of the input factors in the 3D printing process. The tensile strength of the chain links was determined using specialized equipment. The experimental results were processed mathematically to determine some empirical mathematical models that highlight the influence of the values of the input factors in the 3D printing process on the tensile strength of the samples in the form of chain links. It thus became possible to compare the results obtained for the four polymeric materials considered and identify the polymeric material that provides the highest tensile strength of the sample in the form of a chain link. The results of the experimental research showed that the highest mechanical resistance was obtained in the case of the links made of polyethylene terephthalate glycol (PETG). According to experimental results, when tested under identical conditions, PETG links can break for a force value of 40.9 N. In comparison, polylactic acid links will break for a force value of 4.70 N. Links printed in the horizontal position were almost 9-fold stronger than those printed in the vertical position. Under the same test conditions, according to the determined empirical mathematical models, PETG links printed in a horizontal position will break for a force of 300.8 N, while links printed in a vertical position will break for force values of 35.8 N.

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Fracture mechanics analysis for a mooring system subjected to tension and out-of-plane bending

Cited by 2 publications

References 13 publications

A review of numerical modelling and optimisation of the floating support structure for offshore wind turbines

A review of numerical modelling and optimisation of the floating support structure for offshore wind turbines

Tensile Behavior of Chain Links Made of Polymeric Materials Manufactured by 3D Printing

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