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Journal articles on the topic 'Submerged cable'

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1

Sule, S. "SIMPLIFIED EQUATION OF MOTION OF A SUBMERGED OFFSHORE CABLE SUBJECTED TO TWO-DEGREE OF FREEDOM MASS SYSTEMS." Continental J. Engineering Sciences 6, no. 2 (2011): 28–36. https://doi.org/10.5281/zenodo.833929.

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In this paper, a simplified equation of motion is developed to simulate a submerged cable subjected to two degree of freedom using method of influence coefficient. A submerged cable as a continuous system with distributed masses is idealized as a lumped mass system with distributed masses lumped at two chosen points called the nodal points. The lumped masses are assumed to undergo normal mode oscillation at the chosen nodal points. A numerical example is given to illustrate the performance and applicability of the present model. The natural frequencies of the submersed cable generated using th
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2

Behbahani-Nejad, M., and N. C. Perkins. "Numerical Analysis of Nonlinear Wave Propagation in Elastic Submerged Cables." Journal of Offshore Mechanics and Arctic Engineering 121, no. 2 (1999): 116–25. http://dx.doi.org/10.1115/1.2830075.

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This paper analyzes the coupled nonlinear tangential-normal waves that propagate along underwater cable suspensions. Taken with the recently developed linear theory governing the in-plane structural waves (Behbahani-Nejad and Perkins, 1996) and an analysis of nonlinear out-of-plane waves for submerged cables (Behbahani-Nejad and Perkins, 1997), this investigation contributes further understanding toward a nonlinear three-dimensional theory for wave propagation along fluid-loaded cables. The nonlinearities present in the in-plane model render the cable/fluid model intractable by exact analytica
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3

Wu, Zhiwen, and Guoxiong Mei. "Dynamic Response Analysis of Cable of Submerged Floating Tunnel under Hydrodynamic Force and Earthquake." Shock and Vibration 2017 (2017): 1–14. http://dx.doi.org/10.1155/2017/3670769.

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A simplified analysis model of cable for submerged floating tunnel subjected to parametrically excited vibrations in the ocean environment is proposed in this investigation. The equation of motion of the cable is obtained by a mathematical method utilizing the Euler beam theory and the Galerkin method. The hydrodynamic force induced by earthquake excitations is formulated to simulate real seaquake conditions. The random earthquake excitation in the time domain is formulated by the stochastic phase spectrum method. An analytical model for analyzing the cable for submerged floating tunnel subjec
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4

Smith, Dallin, and Jamesina Simpson. "On the Possibility of Using ULF/ELF Electromagnetic Waves from Undersea Cables to Detect Airplanes Submerged in the Ocean." Applied Computational Electromagnetics Society 36, no. 5 (2021): 486–95. http://dx.doi.org/10.47037/2020.aces.j.360501.

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The loss of Malaysian Flight on March 8, 2014, and the subsequent lengthy search for the aircraft highlights the need for an effective detection system for locating airplanes that have crashed into the ocean. The goal of this paper is to test the feasibility of detecting submerged airplanes using ultra-low frequency and/or extremely-low frequency electromagnetic signals generated by undersea cables located along the bottom of the ocean. The proposed detection system is tested using three-dimensional finite-difference time-domain (FDTD) modeling of the cable source, ocean water, ground, and sub
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5

Kamman, James W., and Ronald L. Huston. "Modelling of submerged cable dynamics." Computers & Structures 20, no. 1-3 (1985): 623–29. http://dx.doi.org/10.1016/0045-7949(85)90110-5.

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6

Won, Deokhee, Jihye Seo, and Seungjun Kim. "HYDRODYNAMIC BEHAVIOR OF SUBMERGED FLOATING BRDIGE WITH SUSPENSION SUPPRORT AFTER CABLE FAILURE." Coastal Engineering Proceedings, no. 37 (September 1, 2023): 62. http://dx.doi.org/10.9753/icce.v37.structures.62.

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Submerged floating tunnels with suspension supports (SFTSS) resemble to suspension bridges on lands, which are installed a number of hangers on the main tower and main cables to support the girder. On the other hand, as the SFTSS installed underwater has to resist the buoyancy and the forces in an offshore environment, the main cable was installed at the bottom of the tunnel body and connected with a hanger. The concept of the SFTSS was first proposed by Won et al (2019, 2022). It was found that the SFTSS was generated itself a tuned mass damper (TMD) effect due to the interaction between the
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7

An, Yonghui, Yue Zhong, Yanbin Tan, and Jinping Ou. "Experimental and numerical studies on a test method for damage diagnosis of stay cables." Advances in Structural Engineering 20, no. 2 (2016): 245–56. http://dx.doi.org/10.1177/1369433216659927.

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To diagnose the state of stay cables, a vibration-based model-free damage diagnosis method of stay cables using the changes in natural frequencies is further proposed and validated. The structural frequency is rapidly and easily acquired; moreover, it is simple and reliable for damage diagnosis. The frequency would change after the stay cable is damaged, so the frequency change could be used as the damage index. However, the stay cables are very long in long-span cable-stayed bridges, and their frequencies are very small; the frequency change due to small damage of the stay cable would be subm
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8

Luo, Gang, Xiao Jun Zhou, and Shuang Wang. "Numerical Simulation of Vortex-Induced Vibration of Submerged Floating Tunnel Cable." Applied Mechanics and Materials 256-259 (December 2012): 1352–58. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.1352.

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A two-dimensional RSM turbulence model combined with enhanced wall function method is used to solve Naviar-Stokes equations,and Fourth Order of Runge-Kutta method is embedded in FLUENT’ UDF for Solving vortex-induced vibration equation of the cable of the submerged floating tunnel .The weakly coupled fluid-structure interaction algorithm is applied to solve the vibration equation and Naviar-Stokes equations, respectively,and the structure systems and fluid systems are combined with the lift coefficient, drag coefficient and dynamic mesh technology. The following conclusions: submerged floating
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9

Luoa, Gang, Jianxun Chen, and Xiaojun Zhou. "Effects of Various Factors on the Viv-Induced Fatigue Damage In The Cable Of Submerged Floating Tunnel." Polish Maritime Research 22, no. 4 (2015): 76–83. http://dx.doi.org/10.1515/pomr-2015-0075.

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Abstract According to the modal superposition method, the vortex vibration procedure of submerged floating tunnel cable was compiled using Matlab, based on the calculated results, the fatigue damage was predicted. The effects of various factors, such as cable density, cable length, and pretension and velocity distribution on vortex induced fatigue damage in the cable were studied. The results show that velocity distribution has more effect on the cable fatigue damage than cable length, cable density and pre-tension. Secondly, cable length has also relatively effect on the cable damage fatigue,
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10

Čeović, Josip, and Matko Širola. "Medium and Low Voltage Cable Measurements - TD, PD, LIRA." Journal of Energy - Energija 65, no. 1-2 (2022): 24–37. http://dx.doi.org/10.37798/2016651-2125.

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Elmont d.o.o. Krško – We have spread our main scope of the services from electrical maintenance, modifications implementations and quality control to cable testing area. The main reason for expanding our scope was to support Nuclear Power Plant Krško Cable Aging Management program and the world trend of LTE (Life Time Extension) in power plants. Scope of work – We are identifying potential downgraded conditions for safety and operational important cables in special areas (heat, water, radiation). Our main scope is visual control, and testing with analysis. For low voltage cables the main testi
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11

Ji, Guomin, and Muk Chen Ong. "On-Bottom Stability of Umbilicals and Power Cables for Offshore Wind Applications." Energies 12, no. 19 (2019): 3635. http://dx.doi.org/10.3390/en12193635.

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With the increase in offshore wind farms, the demands for umbilicals and power cables have increased. The on-bottom stability of umbilicals and power cables under the combined wave and current loading is the most challenging design issue, due to their light weight and the complex fluid–cable–soil interaction. In the present study, the methodology for dynamic lateral stability analysis is first discussed; and the reliable hydrodynamic load model and cable–soil interaction model based on large experimental test data are described in detail. The requirement of the submerged weight of a cable w s
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12

Chen, Zhengyang, Yiqiang Xiang, Heng Lin, and Ying Yang. "Coupled Vibration Analysis of Submerged Floating Tunnel System in Wave and Current." Applied Sciences 8, no. 8 (2018): 1311. http://dx.doi.org/10.3390/app8081311.

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Submerged floating tunnel (SFT) is an innovative underwater structure for crossing long straits, which withstands the effects of water wave and current throughout its lifecycle. This paper proposes a theoretical approach to investigate the nonlinear dynamic response of the SFT tube-cable system under combined parametric excitation and hydrodynamic forcing excitations (i.e., wave and vortex-induced loading). Firstly, the governing equations of the SFT system considering the coupled degrees of freedom in the tube and cable are established based on the Hamilton principle and are solved numericall
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13

Lakey, G. F., and E. A. Cottrell. "Long-distance submerged cable fault location technique." Electronics Letters 22, no. 3 (1986): 162. http://dx.doi.org/10.1049/el:19860113.

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14

Fang, Chenfu, Yong Chen, Zhidong Yang, Jiayou Wang, Mingfang Wu, and Kai Qi. "Cable-type welding wire submerged arc surfacing." Journal of Materials Processing Technology 249 (November 2017): 25–31. http://dx.doi.org/10.1016/j.jmatprotec.2017.05.020.

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15

Yue, Youjun, and Lihua Zheng. "Sensorless control of submersible permanent magnet synchronous motor under long-line cable model." Journal of Physics: Conference Series 2704, no. 1 (2024): 012022. http://dx.doi.org/10.1088/1742-6596/2704/1/012022.

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Abstract In the process of oil production, the submerged oil motor works 1-3 km downhole and is connected to the inverter by a long-wire cable, which generates overvoltage at the motor end due to the problem of matching the impedance of the motor with the impedance of the power cable. The downhole environment is not suitable for the installation of precision devices, such as position sensors. To solve these problems, a sensorless control method of submerged oil motors based on a high-frequency voltage injection method is proposed. A motor terminal voltage and current observer under a long-wire
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16

Chen, Yi An, Hsing Cheng Yu, and Young Zehr Kehr. "Dynamic Equilibrium Analysis and Simulation of Submerged Kuroshio Generator System." Applied Mechanics and Materials 764-765 (May 2015): 1070–74. http://dx.doi.org/10.4028/www.scientific.net/amm.764-765.1070.

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This paper presents design of a novel submerged Kuroshio generator system (SKGS) which is suitable for maritime environments near Keelung Sill. The SKGS was combined with a reliable cable design and a simple anchor system at sea, and it could ignore changes of yaw and roll motion through a proper rudder design. An intuitive simulation method adopted MapleSim software to create a rigid structure modeling of the SKGS. Different modeling frameworks for varied cable design and joint positions were adjusted to meet with the system requirements. Therefore, the system requirements of stability, dynam
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17

Ma, Zhanxiong, Jaemook Choi, Jinho Jang, Ohjun Kwon, and Hoon Sohn. "Simultaneous Estimation of Submerged Floating Tunnel Displacement and Mooring Cable Tension through FIR Filter-Based Strain and Acceleration Fusion." Structural Control and Health Monitoring 2023 (February 9, 2023): 1–21. http://dx.doi.org/10.1155/2023/7803876.

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A submerged floating tunnel (SFT) is a tunnel structure that floats approximately 50 m below the water surface and is anchored to the seabed by mooring cables. It is a new alternative to conventional bridges and immersed tunnels. There have been ongoing efforts to construct SFTs worldwide, and the integrity of these SFTs needs to be monitored throughout their lifespan. This study simultaneously estimated the tunnel displacement and mooring cable tension force using acceleration and strain measurements to assess the integrity of an SFT. First, strain measurements were transformed to displacemen
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18

Luo, Wenlong, Bo Huang, Yao Tang, et al. "Numerical Simulation of Dynamic Response of Submerged Floating Tunnel under Regular Wave Conditions." Shock and Vibration 2022 (January 4, 2022): 1–15. http://dx.doi.org/10.1155/2022/4940091.

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A submerged floating tunnel (SFT) is considered an innovative alternative to conventional bridges and underground or immersed tunnels for passing through deep water. Assessment of hydrodynamic performance of SFT under regular wave loading is one of the important factors in the design of SFT structure. In this paper, a theoretical hydrodynamic model is developed to describe the coupled dynamic response of an SFT and mooring lines under regular waves. In this model, wave-induced hydrodynamic loads are estimated by the Morison equation for a moving object, and the simplified governing differentia
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19

Inoue, Tomoya, Hiroyoshi Suzuki, Tsuyoshi Shimamura, Kengo Nakajima, and Genki Shioji. "Experimental Research on Horizontal Rotation of Remotely Operated Vehicles Induced by External Forces Near the Surface of the Ocean." Marine Technology Society Journal 43, no. 3 (2009): 5–12. http://dx.doi.org/10.4031/mtsj.43.3.6.

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AbstractWhen a remotely operated vehicle (ROV) is lowered from its support vessel by a cable, it rotates horizontally because of external forces as it nears the surface of the ocean. This causes the cable to twist. This paper describes experiments using a model of the ROV ABISMO in a water tank to improve safety by examining the waves and the wake flow of propellers as possible causes of the external twisting forces. These experiments on wave effects evaluated the effect of wave height, wavelength, and submerged depth of the model. In addition, the model was varied to include different configu
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20

Muhammad, Naik, Saeed Ullah Jan Mandokhai, Zafar Baloch, Muhammad Habib, and Shamsher Sadiq. "ASSESSMENT OF SEISMIC PERFORMANCE OF SUBMERGED FLOATING TUNNEL UNDER MULTI-SUPPORT SEISMIC EXCITATIONS." NED University Journal of Research 3, Special Issue on First SACEE'19 (2019): 217–24. http://dx.doi.org/10.35453/nedjr-stmech-2019-0025.

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Submerged floating tunnel (SFT) is an innovative structural solution for the transportation infrastructure through sea straits, fjords, and inland waters and is an economical alternative to the long-span cable-supported bridge, immersed tunnel, or underground tunnel. An SFT is a massive cylindrical structure that floats at a certain depth below the water surface and subjected to extreme environmental conditions, such as waves, tsunamis and earthquakes. The seismic assessment of SFT supported by mooring cables, under multi-support seismic excitations needs to be evaluated in more detail. The ti
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21

Sunardi, Sunardi, Woro Agus Nurtiyanto, Jan Setiawan, and Abdussalam Abdussalam. "Rancang Bangun Robot Selam Mini Berbasis Arduino." EPIC Journal of Electrical Power Instrumentation and Control 7, no. 1 (2024): 32–41. http://dx.doi.org/10.32493/epic.v7i1.39665.

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The innovation of submerged or submerged robots is currently prominent enough to be noticed by the general public, the country and even the world. Previously there were still many submerged exercises that were controlled using cable media. In this research, the diving robot controller uses wireless conductive media. Because currently robots can move submerged, it is hoped that they can help human activities. The Submerged Pack robot is an Arduino-based ROV (Remotely Operated Vehicle) which is smaller than usual. This robot uses 4 engines to move and is equipped with a camera and lighting frame
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22

Wang, Yanwen, Peng Chen, Yongmei Zhao, and Yanying Sun. "A Denoising Method for Mining Cable PD Signal Based on Genetic Algorithm Optimization of VMD and Wavelet Threshold." Sensors 22, no. 23 (2022): 9386. http://dx.doi.org/10.3390/s22239386.

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When the pulse current method is used for partial discharge (PD) monitoring of mining cables, the detected PD signals are seriously disturbed by the field noise, which are easily submerged in the noise and cannot be extracted. In order to realize the effective separation of the PD signal and the interference signal of the mining cable and improve the signal-to-noise ratio of the PD signal, a denoising method for the PD signal of the mining cable based on genetic algorithm optimization of variational mode decomposition (VMD) and wavelet threshold is proposed in this paper. Firstly, the genetic
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23

Xiang, Yiqiang, Zhengyang Chen, Ying Yang, Heng Lin, and Sheng Zhu. "Dynamic response analysis for submerged floating tunnel with anchor-cables subjected to sudden cable breakage." Marine Structures 59 (May 2018): 179–91. http://dx.doi.org/10.1016/j.marstruc.2018.01.009.

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24

Sang, Hongqiang, Jin Zhang, Xiujun Sun, Can Li, Lei Wang, and Liwei Wang. "Optimal Design and Dynamic Analysis of Hydrofoil Mechanism of Wave Glider." Journal of Marine Science and Engineering 10, no. 3 (2022): 367. http://dx.doi.org/10.3390/jmse10030367.

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A wave glider can convert vertical wave motion into its forward propulsion. There are many factors affecting the propulsion performance of a wave glider. The swing amplitude of hydrofoil can affect the efficiency of hydrofoil to capture wave energy, and the pull direction of an umbilical cable can affect the transmission efficiency of wave energy. In this paper, an optimized hydrofoil mechanism with a self-adjusting lower limit (SALL) was proposed by analyzing the un- synchronized movement between the submerged glider and the surface float. This mechanism was able to transfer the movement of u
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25

Pan, Wenbo, Cheng Cui, Chun Chen, Mingxiao Xie, Qian Gu, and Zhiwen Yang. "Optimization Analysis of the Arrangement of the Submerged Floating Tunnel Subjected to Waves." Journal of Marine Science and Engineering 12, no. 5 (2024): 764. http://dx.doi.org/10.3390/jmse12050764.

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The motion responses, mooring tensions, and submergence depth are the dominant factors for the arrangement of the Submerged Floating Tunnel (SFT) subjected to waves. Generally, the maximum values of motion responses, mooring tensions, and absolute submergence depth are mainly focused on. In the present study, experiments are implemented to measure the motion responses and mooring tensions of the SFT with different mooring patterns and submergence depths under waves with different characteristic wave heights and periods. In order to evaluate the arrangement of the SFT more effectively and compr
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26

Wang, Jian Xun, Hong Bin Gui, Xi Chen, and Qiang Fu. "Analysis of Attitude and Dynamics Characteristic of a Kind of Submerged Buoy." Applied Mechanics and Materials 226-228 (November 2012): 516–20. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.516.

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In this paper, the attitude and dynamical characteristics of a kind of submerged buoy are studied. The attitude of the buoy system is calculated relatively accurately by mathematical derivations and programming, in which all the tangent and normal fluid drag forces and elastic deformation of the mooring cable are considered. Based on the ANSYS FEA software, the model of system in fluid is established, which takes the effects of fluid drag forces, pretension and additional mass into account. Then the analysis of the effect on dynamics characteristic of the system by considering the attitude or
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27

Liu, D., I. Ahmad, M. J. Janocha, P. Nystrøm, and M. C. Ong. "Optimization of bend stiffeners of a suspended inter-array power cable between two floating offshore wind turbines." IOP Conference Series: Materials Science and Engineering 1294, no. 1 (2023): 012018. http://dx.doi.org/10.1088/1757-899x/1294/1/012018.

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Abstract The concept of a suspended inter-array power cable assumes that the cable floats within the water column instead of being laid on the seabed. This setup requires additional equipment, such as buoyancy modules or buoys, to achieve the desired cable configuration. The implementation of buoyancy modules introduces abrupt changes in stiffness between the cable sections with clamped-on buoyancy modules and bare cable sections. Large stiffness variations can negatively impact cable bending, causing excessive curvature and fatigue damage. In order to form a smooth transition in stiffness bet
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28

Xiong, Jiaming, Song Sang, Youwei Du, Chaojie Gan, Ao Zhang, and Fugang Liu. "Kinematic Stability Analysis of Anchor Cable Structures in Submerged Floating Tunnel under Combined Parametric–Vortex Excitation." Journal of Marine Science and Engineering 12, no. 9 (2024): 1478. http://dx.doi.org/10.3390/jmse12091478.

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The submerged floating tunnel is a marine transportation infrastructure that links two shorelines. The tunnel tube body’s buoyancy exceeds gravity, with anchoring ensuring equilibrium. Anchoring reliability is crucial. This study presents a three-way coupled kinematic model for the mooring structure, formulated on Hamilton’s principle and Kirchhoff’s assumption. It explores the impact of the tube body’s buoyancy-to-weight ratio and the sea current’s angle of incidence on mooring motion response. By solving the motion analysis model, Hill’s equation system is derived to assess the parameter ins
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29

He, Kongde, Pengfei Zhou, Zifan Fang, Weihua Yang, and Shaopeng Liu. "Stochastic dynamic response analysis of submerged multi-body structure considering the uncertainty of connection gap." Noise & Vibration Worldwide 50, no. 8 (2019): 254–63. http://dx.doi.org/10.1177/0957456519869927.

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The aim of this study is to determine the stochastic dynamic characteristics of the system due to the uncertainty of the gap contact between the mooring cable and the structural body of the submerged multi-body structure. The sag effect caused by the light, flexible, and low damping characteristics of the mooring cable and its dynamic elongation under the action of the flow field and the impact of the gap connection is considered. The sag effect is corrected using the equivalent elastic modulus method; the stochastic generalized non-deterministic dynamic model of the system considering the dyn
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30

Matsubara, Yuhei, Hideaki Noda, and Akira Hirao. "Dynamic Behaviour of the Submerged Buoy-Cable System by Ocean Waves." Coastal Engineering in Japan 28, no. 1 (1985): 235–41. http://dx.doi.org/10.1080/05785634.1985.11924418.

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31

Ulutay, Ercan, Metin Yurtsever, Avşin Öztaş, Uğur Akyol, and Reşat Mutlu. "A Water Absorption Chamber Design for Cable Capacitance Measurement Tests." European Journal of Engineering and Applied Sciences 7, no. 2 (2024): 150–58. https://doi.org/10.55581/ejeas.1598086.

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XLPO cables used in ships should be tested for water absorption. Test standards require the cables be submerged in a water absorption chamber and kept at 75 0C for 14 days. Once every 7 days, the cables within the chamber are tested by applying high voltage, and their capacitance, dissipation factor, stability factor, and relative Permittivity are measured. In this study, a water absorption chamber used in the experiments is designed using fiberglass material and controlled with an ENDA ET 4420 temperature controller. It is experimentally shown that the water absorption chamber performs well.
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32

Rao, Alexandra, Nils Risgaard-Petersen, and Urs Neumeier. "Electrogenic sulfur oxidation in a northern saltmarsh (St. Lawrence Estuary, Canada)." Canadian Journal of Microbiology 62, no. 6 (2016): 530–37. http://dx.doi.org/10.1139/cjm-2015-0748.

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Measurements of porewater O2, pH, and H2S microprofiles in intact sediment cores collected in a northern saltmarsh in the St. Lawrence Estuary (Quebec, Canada) revealed the occurrence of electrogenic sulfur oxidation (e-SOx) by filamentous “cable” bacteria in submerged marsh pond sediments in the high marsh. In summer, the geochemical fingerprint of e-SOx was apparent in intact cores, while in fall, cable bacteria were detected by fluorescence in situ hybridization and the characteristic geochemical signature of e-SOx was observed only upon prolonged incubation. In exposed, unvegetated creek b
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33

Yang, Long, Dahai Wang, Huadong Zheng, Zhengyuan Ma, and Yixin Zhang. "Analytical Framework for Tension Characterization in Submerged Anchor Cables via Nonlinear In-Plane Free Vibrations." Journal of Marine Science and Engineering 12, no. 8 (2024): 1286. http://dx.doi.org/10.3390/jmse12081286.

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Submerged tensioned anchor cables (STACs) are pivotal components utilized extensively for anchoring and supporting offshore floating structures. Unlike tensioned cables in air, STACs exhibit distinctive nonlinear damping characteristics. Although existing studies on the free vibration response and tension identification of STACs often employ conventional Galerkin and average methods, the effect of the quadratic damping coefficient (QDC) on the vibration frequency remains unquantified. This paper re-examines the effect of bending stiffness on the static equilibrium configuration of STACs, and e
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34

Kuzmin, Yuri, and Stanislav Proshkin. "An experimental method for detecting objects in an aqueous environment." EPJ Web of Conferences 318 (2025): 03005. https://doi.org/10.1051/epjconf/202531803005.

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This research introduces a novel experimental approach for identifying conductive and non-conductive objects submerged in shallow water using grounded cables. The methodology is underpinned by a comprehensive mathematical analysis of electromagnetic field diffraction caused by elongated conductive and non-conductive spheroids in an aqueous environment, specifically when interacting with a grounded cable. The experimental configuration employs a parallel arrangement of a generator and two receiving electrode antennas. A key feature of this technique is its ability to distinguish an object's uni
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35

Kaneko, S., and M. Ishikawa. "Modeling of Tuned Liquid Damper With Submerged Nets." Journal of Pressure Vessel Technology 121, no. 3 (1999): 334–43. http://dx.doi.org/10.1115/1.2883712.

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An analytical model for describing the effectiveness of tuned liquid damper (TLD) with submerged nets for suppressing horizontal vibration of structures is proposed. Dissipation energy due to the liquid motion under sinusoidal excitation is calculated based on nonlinear shallow water wave theory. In particular, the effects of hydraulic resistance produced by nets installed in a tank on the performance of TLDs are examined. The results of dissipation energy theoretically obtained are confirmed by experiments. To show the effectiveness of the proposed analytical model for TLD-structure interacti
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36

Matsumoto, Eiju. "Galvanometers and the Invention of Self-Balancing Recorders." Measurement and Control 26, no. 6 (1993): 171–75. http://dx.doi.org/10.1177/002029409302600603.

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This paper describes the history of ink recorders from their use with the first submerged transatlantic cable to the invention of self-balancing recorders. At the time of submarine telegraphy, Kelvin galvanometers, as well as siphon recorders, were used as telegraphic receivers. Direct-driven thread recorders and self-balancinig recorders, such as the Callendar recorder and the mechanically sensing potentiometric recorder, also employed galvanometers as detectors. Before the advent of vacuum tubes and semiconductors, the galvanometer was the key component of measuring instruments.
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37

Babanin, Nikolay V., and Armen L. Melkonian. "Defining the flexible electro-mechanical cable configuration when towing underwater vehicle in specific current profile." Труды Санкт-Петербургского государственного морского технического университета 4, no. 2 (2025): 153–60. https://doi.org/10.52899/24141437_2025_02_153.

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BACKGROUND: Research vessels are equipped with various winches designed to solve a wide range of problems. In this regard, there is a need for their design. The two most pressing real-world problems are: Defining the electro-mechanical cable (EMC) configuration and the submerged depth of an underwater vehicle (UV) for a given EMC length; Determining the EMC length required to ensure a given submerged UV depth. The designs are based on the current profile and the underwater vehicle towing speed. For the initial stages (physical and mathematical models), we use a motion reversal-based approach k
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38

Muhammad, Naik, Zahid Ullah, Min-Wo Park, and Dong-Ho Choi. "The role of cable stiffness in the dynamic behaviours of submerged floating tunnel." MATEC Web of Conferences 138 (2017): 02026. http://dx.doi.org/10.1051/matecconf/201713802026.

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39

Kaneko, S., and O. Yoshida. "Modeling of Deepwater-Type Rectangular Tuned Liquid Damper With Submerged Nets." Journal of Pressure Vessel Technology 121, no. 4 (1999): 413–22. http://dx.doi.org/10.1115/1.2883724.

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An analytical model for describing the effectiveness of deepwater-type tuned liquid damper (TLD) with submerged nets for suppressing horizontal vibration of structures is proposed. TLD is a damping device for suppressing the vibration of long-period structures such as high-rise buildings, tall towers, the pylons of cable-stayed bridges, and so on. The damping force is created by the hydrodynamic force caused by the sloshing of water contained in rectangular tanks located on top of such structures. In this study, we proposed the dynamical model for analyzing deepwater-type TLD (DTLD) where the
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Zhou, Xiang-bo, Dong-sheng Qiao, Ming Wang, Guo-qiang Tang, Lin Lu, and Jin-ping Ou. "Global Dynamic Responses and Progressive Failure of Submerged Floating Tunnel Under Cable Breakage Conditions." China Ocean Engineering 38, no. 4 (2024): 676–88. http://dx.doi.org/10.1007/s13344-024-0053-7.

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41

Yuan, Xiuwen, Jiabin Liu, Jianjun Zhou, and Anxin Guo. "Effect of cable layout on hydrodynamic response of submerged floating tunnel under wave action." Ocean Engineering 280 (July 2023): 114257. http://dx.doi.org/10.1016/j.oceaneng.2023.114257.

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42

Zhu, Long-Huan, Kimberly Huguenard, and David Fredriksson. "INTERACTION BETWEEN WAVES AND HANGING HIGHLY FLEXIBLE KELP BLADES." Coastal Engineering Proceedings, no. 36 (December 30, 2018): 31. http://dx.doi.org/10.9753/icce.v36.papers.31.

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The interaction between waves and flexible blades has drawn recent attention because of the capacity of nature-based infrastructure, such as aquatic vegetation and kelp, to attenuate waves. In this study, a new numerical model was developed to study the wave-blade interaction for both bottom-fixed and suspended blades. The dynamics of the blades simulated by a cable model were coupled with OpenFOAM®-based wave model IHFoam with the immersed boundary method. The results showed that the distribution of the blade-induced vortices was asymmetric with more vortices upstream for the single bottom-f
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Lin, Fang, Wu Mengjun, Wang Guangdi, and Cao Peng. "Comparative Analysis on Stress State of Submerged Floating Tunnels in Different Anchor Cable Arrangement Modes." Procedia Engineering 166 (2016): 279–87. http://dx.doi.org/10.1016/j.proeng.2016.11.550.

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Lin, Heng, Yiqiang Xiang, and Ying Yang. "Coupled Vibration Analysis of CFRP Cable-tube System under Parametric Excitation in Submerged Floating Tunnel." Procedia Engineering 166 (2016): 45–52. http://dx.doi.org/10.1016/j.proeng.2016.11.557.

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Wu, Zhiwen, Pengpeng Ni, and Guoxiong Mei. "Vibration response of cable for submerged floating tunnel under simultaneous hydrodynamic force and earthquake excitations." Advances in Structural Engineering 21, no. 11 (2018): 1761–73. http://dx.doi.org/10.1177/1369433218754545.

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Xiang, Yiqiang, Zhengyang Chen, Bing Bai, Heng Lin, and Yunshen Yang. "Mechanical behaviors and experimental study of submerged floating tunnel subjected to local anchor-cable failure." Engineering Structures 212 (June 2020): 110521. http://dx.doi.org/10.1016/j.engstruct.2020.110521.

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Rodríguez Luis, Álvaro, José Antonio Armesto, Raúl Guanche, Carlos Barrera, and César Vidal. "Simulation of Marine Towing Cable Dynamics Using a Finite Elements Method." Journal of Marine Science and Engineering 8, no. 2 (2020): 140. http://dx.doi.org/10.3390/jmse8020140.

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A numerical model to study the towing maneuver for floating and submerged bodies has been developed. The proposed model is based on the dynamic study of a catenary line moving between two bodies, one body with imposed motion, and the other free to move. The model improves previous models used to study the behavior of mooring systems based on a finite element method by reducing the noise of the numerical results considering the Rayleigh springs model for the tension of the line. The code was successfully validated using experimental results for experimental data from different authors and exper
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Orešković, Jasna, Saša Kolar, Ana Brcković, and Ivica Pavičić. "DETERMINATION OF LAKEBED SEDIMENT DISTRIBUTION BASED ON UNDERWATER ELECTRICAL RESISTIVITY TOMOGRAPHY DATA." Rudarsko-geološko-naftni zbornik 39, no. 2 (2024): 111–20. http://dx.doi.org/10.17794/rgn.2024.2.9.

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Electrical resistivity tomography (ERT) in an aquatic environment is usually measured using two basic systems. One system uses floating electrodes, which is usually applied in shallow water, and the other uses underwater cables with integrated electrodes, which is often carried out as a mobile system. The aim of this research was to test an underwater ERT measurement with floating cables on the water surface, but with electrodes submerged at the water bottom. This type of cable spread makes it possible to lay all the electrodes vertically to the bottom without the distance between them being r
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Wang, Fang, Ke Li, Bo Huang, Liang Cheng, and Hao Ding. "Experimental Investigation of the Dynamic Behavior of Submerged Floating Tunnels under Regular Wave Conditions." Journal of Marine Science and Engineering 10, no. 11 (2022): 1623. http://dx.doi.org/10.3390/jmse10111623.

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Submerged floating tunnels (SFTs) are an innovative traffic structure for transportation in deep and long-distance ocean environments. SFTs have the risk of being subjected to wave action in the complex ocean environment. Therefore, in order to ensure the safety and stability of SFTs during their service, the dynamic behavior of an SFT subjected to the action of waves is experimentally investigated in this study. Based on the wave–current flume, a physical scale-model experiment of an SFT for studying the dynamic behavior of an SFT subjected to regular waves interactions is deeply and thorough
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Perricone, Valentina, Pasquale Contestabile, Antonio Mele, Nasrin Hassanpour, Diego Vicinanza, and Mario Buono. "Bioinspired Coastal Barriers: A Preliminary Laboratory Study on the Hydraulic Performances of Shapes Inspired by Marine Organisms." Sustainability 16, no. 11 (2024): 4839. http://dx.doi.org/10.3390/su16114839.

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Coastal erosion, extreme climate events, and the loss of biodiversity are important consequences of climate change that directly impact our society. The needs to develop effective engineering practices using nature as model and mentor are now emerging aimed to develop high-performance coastal infrastructures integrating and sustaining local marine ecosystems. In this scenario, the present article describes the concept development and preliminary experimentation of simplified bioinspired models to evaluate their hydraulic performances. This study is part of a future vision to develop submerged
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