Experimental study into the effect of wind-ice misalignment on the development of ice-induced vibrations of offshore wind turbines

Hammer, Tim C.; Hendrikse, Hayo

doi:10.1016/j.engstruct.2023.116106

Cited by 9 publications

(2 citation statements)

References 16 publications

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“…The bending failure mainly occurs at the side of structure. Similar phenomenon (local crushing and global bending failures) was also observed in model tests 38 , 41 . And Gesa Ziemer 42 , 43 observed intermittent crushing in model tests with different cross-section.…”

Section: Analysis Of Simulation Results For Different Interfacessupporting

confidence: 82%

Numerical study of ice loads on different interfaces based on cohesive element formulation

Xing,

Cong,

Ling

et al. 2023

Sci Rep

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With the increase of marine activities in the Arctic area, the demand for reliable design of marine structures is growing. Numerous publications can be found regarding simulations of ice action on structures using cohesive element models of the ice. However, previous studies have rarely discussed the influence of structural form, that is, the form of ice-structure interaction interface, on the ice load. Thus, a more comprehensive understanding of the ice load on structures with different interface geometries needs to be explored. In the present paper, three-dimensional finite element models with the cohesive element method are developed to investigate the ice load on different structures. The numerical results are validated based on in-situ testing data and the results of the previous numerical model. Parametric studies considering structure widths, inclination angles, ice velocity as well as structure roughness are conducted to explore the horizontal force and failure process of the ice sheet. The process of ice-structure interaction and ice loads on different structural forms were discussed and simplified diagrams of ice load distribution on the interface were developed.

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Section: Analysis Of Simulation Results For Different Interfacessupporting

confidence: 82%

Numerical study of ice loads on different interfaces based on cohesive element formulation

Xing,

Cong,

Ling

et al. 2023

Sci Rep

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“…The interaction between offshore platforms and ice in polar regions is one of the most critical safety concerns for platform structures. It has been reported that numerous offshore platforms worldwide have encountered significant vibration responses induced by ice [1][2][3], posing serious safety risks to the platform structure. To mitigate these risks, it is crucial to conduct extensive research on ice-induced vibration and develop design approaches for offshore platforms in cold regions to mitigate ice-induced vibration.…”

Section: Introductionmentioning

confidence: 99%

Ice-Induced Vibration Analysis of Offshore Platform Structures Based on Cohesive Element Method

Zhang,

Wang,

Sun

et al. 2023

JMSE

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This study conducted ice-induced vibration analysis on offshore platform structures using the cohesive element method (CEM). The efficacy of this method in simulating the interaction between sea ice and the platform structure is verified by comparing it with the Hamburg Ship Modeling Pool (HSVA) ice-breaking experiment. Subsequently, the vibration response of a sea-ice-jacket platform model is investigated under both unprotected conditions and with the presence of ice-breaking cones. The findings reveal that the motion response of offshore platforms exhibits a positive correlation with the impact velocity of the ice, while the sensitivity of this impact is found to be minimal. Furthermore, the influence of different ice directions on the vibration response of offshore platforms is significant, and the shielding effect has an important impact on the platform’s response. Notably, offshore platforms equipped with 52.5-degree cones demonstrate the most effective vibration reduction, reducing the maximum acceleration by 63% compared to unprotected configurations. It is worth mentioning that as the cone angle increases, the corresponding ice-breaking cone undergoes higher load-bearing.

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Functionalized Superhydrophobic Coatings with Electro‐Photothermal Effect for All‐Day Durable Anti‐Icing

Deng,

Du,

Chen

et al. 2024

Adv Materials Inter

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Superhydrophobic surfaces offer notable advantages, including markedly low water affinity and reduced ice adhesion strength. Nevertheless, their practical utility is impeded by their limited durability and vulnerability to failure in cold and humid environments. In this study, a novel approach for devising an electro‐photothermal superhydrophobic (EPS) nanocomposite coating is presented. The findings indicate that the EPS nanocomposite coating exhibits both physical and chemical self‐cleaning attributes, showcasing a synergistic interplay of superhydrophobicity, electrothermal, and photothermal characteristics. The superhydrophobic coating delays icing about four times longer than the original coating. At ambient temperatures of −20 °C, the coating stacked with an electro‐ and photo‐thermal performance de‐icing layer reduces the de‐icing time by about 5 times more than the purely photo‐thermal performance de‐icing time, and reduces the de‐icing time by about 4 times more than the purely electro‐thermal de‐icing time. Furthermore, the EPS surface demonstrates the capability to sustain temperatures above 0 °C through the photothermal effect on sunny days, utilizing both the electrothermal and photothermal effects on cloudy days, and relying on the electrothermal effect during cold nights. The research introduces a novel method for fabricating functional materials, pertinent to practical anti‐icing and de‐icing applications.

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Experimental study into the effect of wind-ice misalignment on the development of ice-induced vibrations of offshore wind turbines

Cited by 9 publications

References 16 publications

Numerical study of ice loads on different interfaces based on cohesive element formulation

Numerical study of ice loads on different interfaces based on cohesive element formulation

Ice-Induced Vibration Analysis of Offshore Platform Structures Based on Cohesive Element Method

Functionalized Superhydrophobic Coatings with Electro‐Photothermal Effect for All‐Day Durable Anti‐Icing

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