Bag and floater motions of a fabric membrane cage

Mukhlas, Muhammad; Lader, Pål; Kristiansen, David; Kristiansen, Trygve; Kanazawa, Motoyasu

doi:10.1016/j.jfluidstructs.2021.103353

Cited by 3 publications

(1 citation statement)

References 34 publications

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“…Studies on the flow structures and force characteristics of the underwater air bags/floating bags have been widely documented since first being proposed in 1987 (Laing, Laing, 1987;Pimm, 2011;Lader et al, 2017;Kurniawan et al, 2021;Mukhlas et al, 2021;Chang, Huang, 2022), mostly of fixed volume. There is still, however, a shortage of studies on the large deformation of storage tanks.…”

Section: Introductionmentioning

confidence: 99%

Experimental assessment and numerical simulation of the large deformation of a flexible composite tank

Liu

Chen²,

Shan³

et al. 2022

Front. Mater.

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A flexible composite tank is developed for the storage of oil and gas. The tank is made of coated fabric, which is a thermoplastic polyurethane reinforced aramid fiber, to satisfy strength, sealing, and fluid compatibility requirements. The top and bottom areas of the tank are connected with a rod to fix the tank height during inflation. The tank deformation is studied. Experimental tests are conducted on two prototypes of 0.4 m height and a prototype of 1.7 m height in a water basin. The test for the small prototypes focuses on obtaining deformed shapes. The test for the 1.7-m height prototype focuses on obtaining strain sensor readings. The tank collapses initially from the bottom part, propagates upward, and then finally only the top part retains the initial shape when the tank is empty. The deformation process is also simulated using a finite element analysis (FEA) model. Results show that the deformation shape of the tank was simulated effectively compared with that in the experimental results. The FEA results are conservative compared with the test results, given that the tank deformation is irregular and the maximum strain was difficult to record during the test. This research provides insight into the deformation behavior of a flexible tank, and the validated FEA model can be used for future design optimization.

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Section: Introductionmentioning

confidence: 99%

Experimental assessment and numerical simulation of the large deformation of a flexible composite tank

Liu

Chen²,

Shan³

et al. 2022

Front. Mater.

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An experimental study on the performance of combined membrane breakwaters against incident waves

2023

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規則波における半閉鎖式柔軟生簀の動的応答とスロッシングに関する実験解析

Wang,

Dong,

Zhou

et al. 2024

J.JASNAOE

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The semi-closed flexible fish cage (SCFFC) is a new concept that is supposed to be an alternative to conventional net cages as an important part of the next-generation aquaculture system. In this study, the dynamic responses and sloshing of SCFFC in regular waves are studied by experiments. A 1:30 physical model is made and set with several accelerometers, wave gauges, and cameras in a water flume. Waves with different periods and heights are made, and the dynamic responses and water levels inside and outside SCFFC are measured. The surge, heave, and pitch of SCFFC increase as the period of the incident wave increases. Its dynamic responses are similar to that of a semi-closed rigid cage, but the magnitude of the motions is much smaller. The bag is deformed and shows strong non-linear responses under some wave conditions, which should be attributed to the complex interactions between sloshing, wave field, and bag's deformation. The filling level of inner water has a great influence on pitch, which might be attributed to the interactions between the moving inner water mass and deforming bag.

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Bag and floater motions of a fabric membrane cage

Cited by 3 publications

References 34 publications

Experimental assessment and numerical simulation of the large deformation of a flexible composite tank

Experimental assessment and numerical simulation of the large deformation of a flexible composite tank

An experimental study on the performance of combined membrane breakwaters against incident waves

規則波における半閉鎖式柔軟生簀の動的応答とスロッシングに関する実験解析

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