Incremental wind-wave analysis of the structural capacity of offshore wind turbine support structures under extreme loading

Wei, Kai; Arwade, Sanjay R.; Myers, Andrew C.

doi:10.1016/j.engstruct.2014.08.010

Cited by 80 publications

(65 citation statements)

References 28 publications

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“…Other reliability methods, such as the incremental wind-wave analysis (IWWA) method [24] and the peak response factor (PRF) method [25] have been developed for reliability analysis of OWT support structures under extreme loads. A comparative study of the application of different reliability analysis methods for OWT towers is presented by Teixeira et al [26].…”

Section: Other Reliability Methodsmentioning

confidence: 99%

“…However, only static analyses were conducted, and few uncertainties were considered, causing an especially high reliability index for the monopile structure (β ≈ 5.4 for a 20-year service life). In a work following that, Wei et al [24] applied the IWWA to assess the effect of load directionality on the structural reliability of a jacket support structure. Similarly, Kim and Lee [25] used GH Bladed [100] in the thrust force calculation and performed reliability analysis for the jacket-type support structure of a 5-MW OWT.…”

Section: Offshore Structuresmentioning

confidence: 99%

“…Wei et al [24] employed FAST to calculate the aerodynamic forces and performed IWWA on two 5-MW wind turbines: one mounted on a monopile support structure and the other mounted on a jacket support structure. The IWWA is similar to the pushover analysis used by the offshore oil and gas industry [106,107], and the support structures fail when the demand base shear exceeds the capacity.…”

Section: Offshore Structuresmentioning

confidence: 99%

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Structural Reliability Analysis of Wind Turbines: A Review

Jiang

Dong

et al. 2017

Energies

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Abstract:The paper presents a detailed review of the state-of-the-art research activities on structural reliability analysis of wind turbines between the 1990s and 2017. We describe the reliability methods including the first-and second-order reliability methods and the simulation reliability methods and show the procedure for and application areas of structural reliability analysis of wind turbines. Further, we critically review the various structural reliability studies on rotor blades, bottom-fixed support structures, floating systems and mechanical and electrical components. Finally, future applications of structural reliability methods to wind turbine designs are discussed.

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Section: Other Reliability Methodsmentioning

confidence: 99%

Section: Offshore Structuresmentioning

confidence: 99%

Section: Offshore Structuresmentioning

confidence: 99%

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Structural Reliability Analysis of Wind Turbines: A Review

Jiang

Dong

et al. 2017

Energies

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“…The search for an improved design and new technologies is to be performed in conjunction with accurate investigations on the response to environmental loads, covering normal and particularly unfavourable conditions [52][53][54], as prescribed by standards and guidelines [15][16][17]. In the theme issue, the papers by Muskulus [55] and by Alati et al [56] present numerical studies on offshore wind turbines under normal and extreme loading conditions of particular interest.…”

Section: Design Load Casesmentioning

confidence: 99%

New perspectives in offshore wind energy

Failla

Arena

2015

Phil. Trans. R. Soc. A.

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The design of offshore wind turbines is one of the most fascinating challenges in renewable energy. Meeting the objective of increasing power production with reduced installation and maintenance costs requires a multi-disciplinary approach, bringing together expertise in different fields of engineering. The purpose of this theme issue is to offer a broad perspective on some crucial aspects of offshore wind turbines design, discussing the state of the art and presenting recent theoretical and experimental studies.

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“…e wind forces acting on the Rotor Nacelle Assembly (RNA) and associate instrumentation can be considered as a concentrated force [30] and can be determined with an equation similar to that for the calculation of hydrodynamic forces:…”

Section: Wind Forcesmentioning

confidence: 99%

Evaluation of Offshore Wind Turbine Tower Dynamics with Numerical Analysis

Dağlı

Tuskan

Gökkuş

2018

Advances in Civil Engineering

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A dynamic behaviour of a cylindirical wind tower with variable cross section is investigated under environmental and earthquake forces.e ground acceleration term is represented by a simple cosine function to investigate both normal and parallel components of the earthquake motions located near ground surface. e function of earthquake force is simplified to apply Rayleigh's energy method. Wind forces acting on above the water level and wave forces acting on below this level are utilized in computations considering earthquake effect for entire structure. e wind force is divided into two groups: the force acting on the tower and the forces acting on the rotor nacelle assembly (RNA). e drag and the inertial wave forces are calculated with water particle velocities and accelerations due to linear wave theory. e resulting hydrodynamic wave force on the tower in an unsteady viscous flow is determined using the Morison equation. e displacement function of the physical system in which dynamic analysis is performed by Rayleigh's energy method is obtained by the single degree of freedom (SDOF) model. e equation of motion is solved by the fourth-order Runge-Kutta method. e two-way FSI (fluid-structure interaction) technique was used to determine the accuracy of the numerical analysis. e results of computational fluid dynamics and structural mechanics are coupled in FSI analysis by using ANSYS software. Time-varying lateral displacements and the first natural frequency values which are obtained from Rayleigh's energy method and FSI technique are compared. e results are presented by graphs. It is observed from these graphs that the Rayleigh model can be an alternative way at the prelimanary stage of the structural analysis with acceptable accuracy.

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Incremental wind-wave analysis of the structural capacity of offshore wind turbine support structures under extreme loading

Cited by 80 publications

References 28 publications

Structural Reliability Analysis of Wind Turbines: A Review

Structural Reliability Analysis of Wind Turbines: A Review

New perspectives in offshore wind energy

Evaluation of Offshore Wind Turbine Tower Dynamics with Numerical Analysis

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