Connection effect on amplitude death stability of multi-module floating airport

Zhang, H.C.; Xu, Daolin; Lu, Chao; En-rong, QI; Tian, Chao; Wu, Yusen

doi:10.1016/j.oceaneng.2016.11.011

Cited by 29 publications

(7 citation statements)

References 28 publications

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“…Different stiffness configurations of the connection will result in different responses of the floating platform which was revealed in the early works. 14,30 Thus the optimization of the stiffness configuration of the connection is essential and significant for the engineering design of the connector.…”

Section: Optimum Stiffness Configuration Of the Connectormentioning

confidence: 99%

“…1 The connector becomes a key component for the safety design of VLFS. 14 Rigid connector was earliest proposed to connect multiple floating platform, but such connector also caused extremely large loads in structure itself. 15 Hinge connector has been very economically and effectively used to reduce the connector loads and the bending moment of cross-sections of the platform via releasing the relative pitch motion of the modules.…”

Section: Introductionmentioning

confidence: 99%

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A new type connection with optimum stiffness configuration for very large floating platforms

Zhang

Chen

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part M:

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A novel connection for super-scale modularized floating platforms is put forward for the purposes of suppressing the oscillation of the platform. The platform consists of multiple blocks where semi-submergible modules are flexibly connected with upper decks by elastic cushions. For the connection between adjacent blocks, neighboring decks are linked by rigid hinges and neighboring floating modules are connected by flexible linkages. Based on the linear wave theory and rigid-module-flexible-connection (RMFC) model, the governing equation of motions for the modularized floating platform is derived by using a network modeling method. In numerical case studies, a five-block platform is investigated. Taking combined responses of the platform and the connector loads as an objective function, the stiffness configuration of the connection and the elastic cushion is optimally determined by using a genetic algorithm. At last, the short-term extreme responses of the floating platform with the optimum setting of the stiffness configuration of the connection are analyzed.

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Section: Optimum Stiffness Configuration Of the Connectormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A new type connection with optimum stiffness configuration for very large floating platforms

Zhang

Chen

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part M:

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“…A particular type of floating structures are the so called very large floating structures (VLFS). One can find several examples of VLFS, 1 such as floating airports, 2,3 floating breakwaters, 4,5 floating solar energy installations, 6,7 or even futuristic floating modular cities 8,9 . The study of the behavior of VLFS is, therefore, relevant for a wide variety of industries and scientific disciplines.…”

Section: Introductionmentioning

confidence: 99%

A monolithic finite element formulation for the hydroelastic analysis of very large floating structures

Colomés

Verdugo

Akkerman

2022

Numerical Meth Engineering

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In this work we present a novel monolithic Finite Element method for the hydroelastic analysis of very large floating structures (VLFS) with arbitrary shapes that is stable, energy conserving, and overcomes the need of an iterative algorithm. The new formulation enables a fully monolithic solution of the linear free-surface flow, described by linear potential flow, coupled with floating thin structures, described by the Euler-Bernoulli beam or Poisson-Kirchhoff plate equations. The formulation presented in this work is general in the sense that solutions can be found in the frequency and time domains, it overcomes the need of using elements with C 1 continuity by employing a continuous/discontinuous Galerkin approach, and it is suitable for finite elements of arbitrary order. We show that the proposed approach can accurately describe the hydroelastic phenomena of VLFS with a variety of tests, including structures with elastic joints, variable bathymetry, and arbitrary structural shapes.

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“…A nonlinear dynamic network model for the modular VLFS has been proposed, which can account for different nonlinear effects such as sudden changes of module responses [21], amplitude death [22][23][24], and collective behaviors [25]. The availability of this nonlinear numerical model has been verified by corresponding model tests [26].…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic Analysis of a Modular Floating Structure with Tension-Leg Platforms and Wave Energy Converters

Ren

Liu

et al. 2021

JMSE

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This work presents a modular floating structure, which consists of five inner tension-leg platforms and two outermost wave energy converters (denoted as MTLPW). The hydrodynamic interaction effect and the mechanical coupling effect between the five inner tension-leg platforms (TLP) and the two outermost wave energy converters (WEC) are taken into consideration. The effects of the connection modes and power take-off (PTO) parameters of the WECs on the hydrodynamic performance of the MTLPW system are investigated under both operational and extreme sea conditions. The results indicate that the hydrodynamic responses of the MTLPW system are sensitive to the connection type of the outermost WECs. The extreme responses of the bending moment of connectors depend on the number of continuously fixed modules. By properly utilizing hinge-type connectors to optimize the connection mode for the MTLPW system, the effect of more inner TLP modules on the hydrodynamic responses of the MTLPW system can be limited to be acceptable. Therefore, the MTLPW system can be potentially expanded to a large degree.

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Connection effect on amplitude death stability of multi-module floating airport

Cited by 29 publications

References 28 publications

A new type connection with optimum stiffness configuration for very large floating platforms

A new type connection with optimum stiffness configuration for very large floating platforms

A monolithic finite element formulation for the hydroelastic analysis of very large floating structures

Hydrodynamic Analysis of a Modular Floating Structure with Tension-Leg Platforms and Wave Energy Converters

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