Fatigue analysis on the mooring chain of a spread moored FPSO considering the OPB and IPB

Kim, Yooil; Kim, Minsuk; Park, Myong-Jin

doi:10.1016/j.ijnaoe.2018.03.004

Cited by 11 publications

(3 citation statements)

References 2 publications

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“…Novel method was validated versus a well‐established bivariate Weibull method, using both analytical synthetic data and measured GPEH system dynamics. Finally, advocated Using advocated method for systems with more than two dimensions obviously cannot be validated versus bivariate statistical methods; hence, it can be validated versus direct Monte Carlo simulations; for details, see authors’ latest works (Gaidai, Liu, et al., 2023; Gaidai, Wang, Yakimov, Sun, et al., 2023; Gaidai, Xing, Xu, & Balakrishna, 2023; Gaidai, Xu, Yakimov, et al., 2023; Gaidai, Yakimov, and Balakrishna, 2023; Gaidai, Yakimov, Wang, Hu, et al., 2023; Gaidai, Yakimov, Wang, Zhang, et al., 2023; Gaidai, Yan, Xing, Xu, et al., 2023; Liu et al., 2023; Sun et al., 2023; Yakimov, Gaidai, Wang, & Wang, 2023; Yakimov, Gaidai, Wang, Xu, et al., 2023). Suggested methodology may be well used in a wide range of engineering areas of applications.…”

Section: Discussionmentioning

confidence: 99%

Energy harvester reliability study by Gaidai reliability method

Gaidai,

Sun,

Wang

2024

Climate Resilience

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This study validates a novel structural reliability method, particularly suitable for high‐dimensional green energy harvesting device dynamic systems, versus a well‐established bivariate statistical method, known to accurately predict two‐dimensional system extreme response contours. Classic reliability methods dealing with time series do not always have an advantage of dealing easily with dynamic system high dimensionality, along with complex cross‐correlations among different system components. Energy harvesters constitute an important part of modern offshore green energy engineering; hence, proper experimental study along with safety and reliability analysis are of practical design and engineering importance. To study the performance of galloping energy harvesters, a series of laboratory wind tunnel tests have been conducted, selecting different wind speeds. This study illustrates the usage of the advocated novel reliability method, by analyzing bivariate statistics of experimental galloping energy harvester's dynamics. The bivariate statistics was extracted from available experimental results, more specifically for the device's voltage‐force dataset. Advantage of the proposed methodology being that relatively short experimental data record may still yield meaningful design results, provided proper statistical methods have been applied. Safety and reliability are important engineering concerns for all kinds of green energy devices. In the case of measured device's structural response, an accurate prediction of system failure or damage probability is possible, as illustrated in this study. Distinctive advantage of advocated novel semi‐analytical reliability methodology being the fact that it can tackle dynamic systems with practically unlimited number of dimensions (or components), along with complex nonlinear cross‐correlations between different system key components.

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Section: Discussionmentioning

confidence: 99%

Energy harvester reliability study by Gaidai reliability method

Gaidai,

Sun,

Wang

2024

Climate Resilience

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“…Likewise, Dong et al studied the behavior of ratcheting failure of certain materials under the influence of cyclic loading [23]. Kim et al analyzed the fatigue of the mooring chain structure on FPSO vessels with certain operating scenarios using the non-linear finite element (NLFE) method [24]. Kong et al observed fatigue in transverse welded joints under 2G and 3G welding positions using experimental methods compared to numerical simulations [25].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Life Assessment of Deck Barge Construction Using Numerical Simulation Methods

Alamsyah,

Setiawan,

Wulandari

et al. 2023

zonalaut

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Barges are used as the main means of transporting heavy goods such as nickel, wood, coal and other materials that are placed on the main deck and have implications for stress values and construction fatigue life. This study uses a numerical simulation method with the help of ANSYS software. The load simulations given to the main deck construction of the barge are 50% load, 75% load, and 100% load (full load). The results of the numerical simulation detected that the largest stress occurred when the 100% load condition was 190.7 MPa. The stress with 75% load is 160.21 MPa and the stress for 50% load is 129.73 MPa. The fatigue life at 100% load is 10.66 years with a stress cycle of 170000 times, 75% load is 13.49 years with a stress cycle of 300000, and a 50% load is 21.16 years with the a stress cycle of 700000. -

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“…Offshore platforms and floating production storage and offloading (FPSO) are an effective solution for deep-sea oil and natural gas production. Such marine structures are attached to the seabed by anchoring systems composed of, in general, anchors, connectors and mooring chains (Wilson, 2003;Yaghin and Melchers, 2015;Muslim and Kamil, 2017;Kim et al, 2019;Ma et al, 2019;Ozguc, 2020).…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Grade R4 Steel Manufactured by Ingot Casting and Used in the Production of Offshore Mooring Chains

Mainier,

Canto,

Meiriño

et al. 2023

Trans. Marit. Sci.

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The objective of this study is to characterise grade R4 steel manufactured by ingot casting that is used as the raw material for the production of offshore mooring chains. Rolled bars of grade R4 steel have been selected and metallographic analyses and micro hardness, tensile and Charpy V-notch impact tests performed. Tensile and Charpy V-notch impact tests have also been carried out on mooring links manufactured from the same grade R4 steel. Based on the results presented, the influence of the rolling reduction ratio of the bars and the influence of the ingot casting cooling and reheating process have been observed. Both factors have been found to increase product quality, particularly with respect to the central segregation and homogeneity of the rolled bars.

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Fatigue analysis on the mooring chain of a spread moored FPSO considering the OPB and IPB

Cited by 11 publications

References 2 publications

Energy harvester reliability study by Gaidai reliability method

Energy harvester reliability study by Gaidai reliability method

Fatigue Life Assessment of Deck Barge Construction Using Numerical Simulation Methods

Characteristics of Grade R4 Steel Manufactured by Ingot Casting and Used in the Production of Offshore Mooring Chains

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