Evaluation of the structural strength and failure for floating collar of a single-point mooring fish cage based on finite element method

Liu, Haiyang; Xiao-hua, Huang; Wang, Shaomin; Hu, Y. Charlie; Yuan, Taiping; Genxi, Guo

doi:10.1016/j.aquaeng.2018.12.007

Cited by 20 publications

(9 citation statements)

References 26 publications

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“…The floating cage balanced dynamically when the reserve buoyancy was up and down to the vertical downward force component resulting from increased environmental forces [9] 4 Conclusion…”

Section: Discussionmentioning

confidence: 99%

Floating Cage Stability With Vacuum Balance Unit

Irawan

2021

E3S Web Conf.

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Floating cages are the technology used for aquaculture activities. The dynamic factors of the sea will affect the floating cage, one factor is the waves. The waves cause a change in the position of the floating cage that affects the stability of the floating cage. The floating cage needs should have a balancing unit for stability. The model of a floating cage with a vacuum balancing unit is for a function to perform a stable position when exposed to sea waves. This research was executed by comparing models of the floating cages without a vacuum balancing unit with the floating cages installed with a vacuum balancing unit. The stability in each model is tested by comparing the two models of floating cages, exposed to the naturally wavy sea, for the changing in position was measured with the accelerometer data logger installed on each floating cage model. The sorted data of each data logger of the two models with identical sequences on the X and Y axes for comparison purposes. The results show that the value of the change in position is smaller for the floating cage installed in the vacuum balancing unit to perform more stability.

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“…The floating cage balanced dynamically when the reserve buoyancy was up and down to the vertical downward force component resulting from increased environmental forces [9] 4 Conclusion…”

Section: Discussionmentioning

confidence: 99%

Floating Cage Stability With Vacuum Balance Unit

Irawan

2021

E3S Web Conf.

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“…Since the ratio of the characteristic length of the structure to the wavelength of the buoyancy system (the diameter of floating sphere and floating tube) of floating artificial reefs is less than 0.2, that is, a small-scale structure, the finite element method and the lumped mass point method can be used to establish the model of floating artificial reefs. The drag and inertia forces in waves and currents can be determined following the Morison equation (Sohn et al, 2011;Zhao et al, 2015;Hou et al, 2018;Liu et al, 2019;Chu et al, 2020;Guo et al, 2020). However, the critical issue is the determination of the hydrodynamic coefficients.…”

Section: Component Of the Floating Reefmentioning

confidence: 99%

Review of Structure Types and New Development Prospects of Artificial Reefs in China

et al. 2022

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Artificial reefs are beneficial to restore fishery resources and increase fishery production. Meanwhile, they play a significant role in improving ocean ecology and accelerating the evolution of fishery industries. Since they are generally affected by currents, waves, and other hydrological factors, the flow field around artificial reefs and their stabilities have become a research hotspot in recent years. Research on artificial reefs is a systematic process consisting of four aspects: Firstly, the significance, the definition, the mechanism, and the present research progress were introduced for artificial reefs in detail. Secondly, the development trend of the sit-bottom artificial reef and that of the floating artificial reef were summarized, respectively. Thirdly, it was found that the combination of traditional artificial reefs and emerging ocean engineering has a great development potential in practical engineering. Finally, the existing problems related to the hydrodynamic characteristics of the artificial reefs in China were summarized, and the prospects of artificial reefs were proposed. The purpose of this study is to provide a scientific reference for the ecological and sustainable development of the large-scale construction of artificial reefs in the ocean.

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“… Sub-system/Assembly/Component Studied limit-states Description Ref Aquaculture Grid mooring system for net cage system Fatigue Direct integration by assuming a worst-case scenario: extreme-value event method ( Hou et al, 2019a , b ) Floating collar Tensile strength Buckling Fatigue Static, vibration and fatigue analysis of a Finite Element (FE) model. Estimating fatigue life from fatigue laws (S-N curves) (potentially non-linear HDPE fatigue and strength behaviour) ( Bai et al, 2018 ; Zhao et al, 2019a ; Liu et al, 2019a ) Mooring chains Ultimate strength First Order Reliability Method (FORM) for Time-dependent reliability assessment of mooring chains subjected to corrosion. ( Hou et al, 2017 ) Offshore Wind Turbine Foundation Fatigue Buckling Ultimate Strength Reliability analysis using two methods, Monte Carlo Simulation (MCS) with Latin Hypercube Sampling and FORM.…”

Section: Reliability Analysis Of the Integrated Systemmentioning

confidence: 99%

Reliability of multi-purpose offshore-facilities: Present status and future direction in Australia

Aryai

Abdussamie

Salehi

et al. 2021

Process Safety and Environmental Protection

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Sustainable use of the ocean for food and energy production is an emerging area of research in different countries around the world. This goal is pursued by the Australian aquaculture, offshore engineering and renewable energy industries, research organisations and the government through the “Blue Economy Cooperative Research Centre”. To address the challenges of offshore food and energy production, leveraging the benefits of co-location, vertical integration, infrastructure and shared services, will be enabled through the development of novel Multi-Purpose Offshore-Platforms (MPOP). The structural integrity of the designed systems when being deployed in the harsh offshore environment is one of the main challenges in developing the MPOPs. Employing structural reliability analysis methods for assessing the structural safety of the novel aquaculture-MPOPs comes with different limitations. This review aims at shedding light on these limitations and discusses the current status and future directions for structural reliability analysis of a novel aquaculture-MPOP considering Australia’s unique environment. To achieve this aim, challenges which exist at different stages of reliability assessment, from data collection and uncertainty quantification to load and structural modelling and reliability analysis implementation, are discussed. Furthermore, several solutions to these challenges are proposed based on the existing knowledge in other sectors, and particularly from the offshore oil and gas industry. Based on the identified gaps in the review process, potential areas for future research are introduced to enable a safer and more reliable operation of the MPOPs.

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Evaluation of the structural strength and failure for floating collar of a single-point mooring fish cage based on finite element method

Cited by 20 publications

References 26 publications

Floating Cage Stability With Vacuum Balance Unit

Floating Cage Stability With Vacuum Balance Unit

Review of Structure Types and New Development Prospects of Artificial Reefs in China

Reliability of multi-purpose offshore-facilities: Present status and future direction in Australia

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