Showing papers in "Marine Structures in 2020"

TL;DR: In this article, a cable-stayed bridge pier subjected to ship collisions using finite element (FE) simulations in LS-DYNA is investigated, and three different damage indices are proposed based on the pier deflection, the internal energy absorbed by the pier, and the axial load capacity of the pier columns to classify the damage levels.

TL;DR: In this article, the authors present an overview of the state-of-the-art and future trends in asset maintenance management strategies applied to corroded steel structures in extreme marine environments.

TL;DR: In this article, a set of numerical methods are combined to simulate the ship-wave-ice interaction in such ice conditions, and then a series of simulations are performed to investigate how the resistance is influenced by ship speed, ice concentration, ice thickness and floe diameter.

TL;DR: State-of-the-art nonlinear time-domain analyses show that the linearized model is conservative in general, but reasonably accurate in capturing trends, suggesting that the presented methodology is suitable for preliminary integrated design calculations.

TL;DR: In this paper, a full-scale field experimental test is undertaken to determine the pile behavior under various lateral loading conditions, and the bending moments and lateral deflections are calculated from distributed fiber optic sensors, and then analyzed with various p-y methods.

TL;DR: A new time-frequency analysis method based on single mode function (SMF) decomposition is proposed to overcome the mode mixing problem in the structural health monitoring (SHM) of offshore wind turbines and demonstrates the effective suppression of non-relevant frequency components using SMF decomposition.

TL;DR: In this paper, an innovative hybrid foundation consisting of a traditional monopile and a wide-shallow bucket is developed for offshore wind turbines in severe marine environments, and a series of numerical analyses are conducted to investigate its behavior under the static and dynamic loading, considering various loading eccentricities.

TL;DR: In this article, the application of finite element method (FEM) and the development of equations to predict the failure pressure of single corrosion affected pipes subjected to internal pressure and axial compressive stress were described.

TL;DR: In this paper, the authors present a numerical study on the hydroelastic response of a 4.6 km long fjord crossing floating bridge subjected to wave loads, and examine the various effects of inhomogeneous wave loads on the dynamic responses of the floating bridge.

TL;DR: In this article, the collapse behavior and ultimate hull girder strength of container ships under combined hogging moment and bottom local loads are analyzed using nonlinear finite element method, and the obtained results will be utilized in the Part 2 paper to develop a simplified method of progressive collapse analysis for container ships.

TL;DR: In this paper, the authors investigated the low-cycle fatigue behavior of mooring chains high-strength steel grade R4 under different strain amplitudes and strain ratios at room temperature.

TL;DR: The feasibility of detecting blade loads for model FWT in wave basin tests is investigated and an on-line monitoring system based on Fiber Bragg Grating and Fiber Optical Rotary Joint sensors presents impressive feasibility and reliability.

TL;DR: In this paper, a response emulator based on Gaussian processes regression with adaptive sampling has been established based on response calculations from a hydrodynamic model to estimate the vertical bending moment of a tanker.

TL;DR: In this paper, the problem of fatigue lifetime estimation of explosive cladded transition joints under random loading conditions has been described, and the fatigue test results performed for the random state of tension-compression under a generated spectrum according to the Pierson-Moskowitz model.

TL;DR: In this paper, the optimal padeye depths and the influencing factors, for both free gapping and no gapping interface conditions, were investigated, and the effect of tension gap on the anchor's holding capacity was shown.

TL;DR: A novel approach to model ship- ice interaction is presented, which maintains the accuracy of the modelling with Finite Element Method (FEM) in ship-ice interaction scale, while being computationally very cheap, therefore is capable to be applied in ship scale simulations.

TL;DR: In this article, the structural behavior and design of high-strength steel welded tubular connections (yield strength higher than 700 MPa) subjected to monotonic and strong cyclic loading is investigated.

TL;DR: In this article, the authors used sensitivity analysis to identify the influence of input parameters on critical length of time before corrosion initiation predicted by a chloride diffusion model and calculated the exceedance probabilities of corrosion initiation time given that input parameters exceed certain thresholds.

TL;DR: In this article, the authors investigate the ice bending and ice load when level ice collides on ships and marine structures using numerical simulation method, and compare the numerical results with field test.

TL;DR: In this paper, the burst pressure of steel reinforced flexible pipe (SRFP) considering plasticity is investigated through experimental, theoretical and numerical methods, and the results obtained from the aforementioned methods are in good agreement with each other, which illustrates the accuracy and reliability of the proposed theoretical and numeric models.

TL;DR: In this article, the effect of a passive tuned mass damper (TMD) on the impact velocities between the blade root and hub during the mating phase and its effect on the response-based limiting sea states was investigated.

TL;DR: In this article, the authors investigated the use of glass fiber- reinforced polymer (GFRP) bars as a solution for corrosion and hollow composite- reinforced sections (HCRSs) to confine the inner concrete wall in hollow concrete columns (HCCs).

TL;DR: In this article, the effects of non-symmetrical corrosion defects (about the major or minor axis of the ellipse) on the collapse modes and collapse pressures of subsea pipelines are studied using the Finite Element (FE) method.

TL;DR: In this article, a multi-spring beam-column model suitable for monopile design in soil conditions in China is proposed and verified by a comprehensive suite finite element parametric analyses.

TL;DR: In this article, the buckling collapse behavior of a ship hull girder subjected to several cycles of extreme load was predicted by applying the simplified progressive collapse method with an extended capability to re-formulate the load shortening curve of structural components to account for cyclic degradation.

TL;DR: In this article, a novel approach based on repeated extraction of maximum energy component (MEC) is proposed, which can be accurately extracted with an improved performance throughout the entire signal decomposition.

TL;DR: In this article, the authors explored the use of localized necking for failure modeling in maritime crash analysis, using large shell elements, and investigated the effects of bending deformation on the initiation of necking, non-proportional loading paths, and ductile fractures not preceded by localizednecking.

TL;DR: In this paper, a series of near-field underwater explosion experiments were carried out on the mimic steel hull structures to investigate the effects of the standoff distance on their dynamic behavior, and a fluid-solid coupling algorithm was implemented in establishing a finite element (FE) model to simulate dynamic response of the hull structures under a near field underwater explosion.

TL;DR: In this paper, the axial compression performance of square CFDT short columns is comprehensively analyzed, and two constitutive models of confined concrete for square double-tube (CFDT) core concrete are proposed.

TL;DR: In this paper, a sensitivity analysis of the Bezier curve parameters for a fixed aspect ratio with prototype dimensions under uniform flow conditions was conducted by applying Computational Fluid Dynamics (CFD), and the pressure distribution around the SFT cross-section surface was analyzed.