Literatura académica sobre el tema "Nonlinear wave loading"

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Artículos de revistas sobre el tema "Nonlinear wave loading"

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Mockutė, Agota, Enzo Marino, Claudio Lugni, and Claudio Borri. "Comparison of Nonlinear Wave-Loading Models on Rigid Cylinders in Regular Waves." Energies 12, no. 21 (2019): 4022. http://dx.doi.org/10.3390/en12214022.

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Monopiles able to support very large offshore wind turbines are slender structures susceptible to nonlinear resonant phenomena. With the aim to better understand and model the wave-loading on these structures in very steep waves where ringing occurs and the numerical wave-loading models tend to lose validity, this study investigates the distinct influences of nonlinearities in the wave kinematics and in the hydrodynamic loading models. Six wave kinematics from linear to fully nonlinear are modelled in combination with four hydrodynamic loading models from three theories, assessing the effects
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Chen, L. F., J. Zang, P. H. Taylor, et al. "An experimental decomposition of nonlinear forces on a surface-piercing column: Stokes-type expansions of the force harmonics." Journal of Fluid Mechanics 848 (June 1, 2018): 42–77. http://dx.doi.org/10.1017/jfm.2018.339.

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Wave loading on marine structures is the major external force to be considered in the design of such structures. The accurate prediction of the nonlinear high-order components of the wave loading has been an unresolved challenging problem. In this paper, the nonlinear harmonic components of hydrodynamic forces on a bottom-mounted vertical cylinder are investigated experimentally. A large number of experiments were conducted in the Danish Hydraulic Institute shallow water wave basin on the cylinder, both on a flat bed and a sloping bed, as part of a European collaborative research project. High
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Jamieson, Wayne W., Etienne P. D. Mansard, and Geoffrey R. Mogridge. "IRREGULAR WAVE LOADING ON A CONICAL STRUCTURE." Coastal Engineering Proceedings 1, no. 21 (1988): 167. http://dx.doi.org/10.9753/icce.v21.167.

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The horizontal forces, vertical forces and overturning moments exerted by waves on a fixed model of a 45" conical structure are presented. Irregular wave loading tests were conducted for a range of conditions described by base diameter on peak period wave length D/Lp from 0.31 to 1.76, water depth on peak period wave length h/Lp from 0.11 to 0.63, and significant wave height on peak period wave length Hm./Lp up to 0.07. Time series records, spectral densities and transfer functions for the irregular wave loading tests are used to illustrate the nonlinear nature of the measured wave loads. In m
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Zhu, Bo, and Jaesun Lee. "A Study on Fatigue State Evaluation of Rail by the Use of Ultrasonic Nonlinearity." Materials 12, no. 17 (2019): 2698. http://dx.doi.org/10.3390/ma12172698.

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Nonlinear ultrasonic testing has been accepted as a promising manner for evaluating material integrity in an early stage. Stress fatigue is the main threats to train safety, railways examinations for stress fatigue are more significant and necessary. A series of ultrasonic nonlinear wave experiments are conducted for rail specimens extracted from railhead with different degree of fatigue produced by three-point bent loading condition. The nonlinear parameter is the indicator of nonlinear waves for expressing the degree the fatigue. The experimental results show that the sensitivity of a third
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Dudko, Olga V., and Alexandr A. Mantsybora. "Shock Loading of Heteromodular Elastic Materials under Plane-Strain Condition." Key Engineering Materials 887 (May 2021): 634–39. http://dx.doi.org/10.4028/www.scientific.net/kem.887.634.

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The paper discusses the results of mathematical modeling the two-dimensional nonlinear dynamics of heteromodular elastic materials. The resistance of these materials under tension and compression is various. The deformation properties of the heteromodular medium are described within the framework of the isotropic elasticity theory with stress-dependent elastic moduli. In the plane strain case, it is shown that only two types of the nonlinear deformation waves can appear in the heteromodular elastic materials: a plane-polarized quasi-longitudinal wave and a plane-polarized quasi-transverse wave
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Erofeev, Vladimir I., Sergey I. Gerasimov, and Alexey O. Malkhanov. "Nonlinear Spatial Localized Strain Waves." EPJ Web of Conferences 183 (2018): 02030. http://dx.doi.org/10.1051/epjconf/201818302030.

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A possible way of study of single waves in solids is discussed. The soliton is one of these waves without shape and parameters varying. Soliton deformation parameters are connected with the elastic moduli of the third order that allows defining values of these moduli by means of the measured solitondeformation parameters in various type waveguides made of the same material. The conditions under which a soliton can exist in a rod are analytically determined. For simultaneous excitation of loading in several wave guides two new energetic photosensitive structures (the mixtures are given) initiat
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Liaw, Chih Young, and Xiang Yuan Zheng. "Polynomial Approximations of Wave Loading and Superharmonic Responses of Fixed Structures." Journal of Offshore Mechanics and Arctic Engineering 125, no. 3 (2003): 161–67. http://dx.doi.org/10.1115/1.1576818.

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Besides the commonly considered drag force, inundation due to variable water surface is another important nonlinear effect of wave loading. Quadratic and quartic approximations of the inundation drag force are derived using the least squares method. Other nonlinear effects, including the second-order wave kinematics and nonlinear inertia wave forces, are also considered. Superharmonic forces and the corresponding structural responses due to different nonlinear effects are compared using a single mode representation of the fixed offshore structural system. The appropriate expressions that can s
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Liu, Shi, Xinran Guo, Yi Yang, Yatao Lu, and Lifen Chen. "Extreme Wave Loading on a Vertical Circular Cylinder." Applied Sciences 13, no. 15 (2023): 8784. http://dx.doi.org/10.3390/app13158784.

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Extreme wave loading on a marine structure, consisting of a quasi-static and a dynamically slamming component, often drives the design of such a structure. Their accurate predictions remain challenging tasks. This paper examines the slamming contribution to the force–time histories from a series of experiments in which the crest of a wave is forced to hit a truncated cylinder suspended from above. A range of inundation levels, representing the breaker heights, are considered. The work also provides insights into nonlinear load characteristics on a vertical truncated cylinder. A simple analytic
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Nekouzadeh, Ali, Guy M. Genin, Philip V. Bayly, and Elliot L. Elson. "Wave motion in relaxation-testing of nonlinear elastic media." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 461, no. 2058 (2005): 1599–626. http://dx.doi.org/10.1098/rspa.2004.1437.

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Relaxation testing is a fundamental tool for mechanical characterization of viscoelastic materials. Inertial effects are usually neglected when analysing these tests. However, relaxation tests involve sudden stretching of specimens, which causes propagation of waves whose effects may be significant. We study wave motion in a nonlinear elastic model specimen and derive expressions for the conditions under which loading may be considered to be quasi-static. Additionally, we derive expressions for wave properties such as wave speed and the time needed to reach a steady-state wave pattern. These e
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Li, Fu Cai, Zheng Hao Sun, Hong Guang Li, and Li Min Zhou. "A Nonlinear Ultrasound Method for Fatigue Evaluation of Marine Structures." Materials Science Forum 813 (March 2015): 116–23. http://dx.doi.org/10.4028/www.scientific.net/msf.813.116.

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Fatigue is a major cause of failure in marine structures resulting from random wave and wind loading. A nonlinear ultrasound method for fatigue evaluation which uses interaction of two non-collinear nonlinear ultrasonic waves with quadratic nonlinearity is investigated in this paper. A hyperbolic system of conservation laws is applied here and a semi-discrete central scheme is used to solve the numerical problem. The numerical results prove that a resonant wave can be generated by two primary waves with certain resonant conditions. Features of the resonant wave are analyzed both in the time an
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Tesis sobre el tema "Nonlinear wave loading"

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Rodriguez, Marcos. "The nonlinear wave loading and dynamic response of a freely-floating two-dimensional box." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/31524.

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This thesis concerns the nonlinear loading and dynamic response of a rectangular box in two dimensions. A fully-nonlinear potential flow model and a series of experimental procedures are employed to describe the nonlinearities governing the floating-body behaviour. Adopting this twin-track approach, nonlinear forcing components are found to make major contributions to both the excitation problem and the motion response. Two main sources of nonlinearity are established: a first associated with higher-order wave-structure interactions, and a second associated with viscous dissipation. The main a
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Chun, Sangeon. "Nonlinear Fluid-Structure Interaction in a Flexible Shelter under Blast Loading." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/29849.

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Recently, numerous flexible structures have been employed in various fields of industry. Loading conditions sustained by these flexible structures are often not described well enough for engineering analyses even though these conditions are important. Here, a flexible tent with an interior Collective Protection System, which is subjected to an explosion, is analyzed. The tent protects personnel from biological and chemical agents with a pressurized liner inside the tent as an environmental barrier. Field tests showed unexpected damage to the liner, and most of the damage occurred on tent's
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Azarhoushang, Azin. "Dynamic response of fixed offshore platforms to environmental loads." Thesis, Curtin University, 2010. http://hdl.handle.net/20.500.11937/135.

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In this thesis a simplified method for dynamic response of jacket type offshore structures to extreme environmental load is investigated using existing experience and the procedures available within the industry. Fixed Jacket type offshore platforms may, under extreme wave loading conditions, exhibit significant nonlinear behavior. This must be accounted for in the design of such platforms, in order to ensure satisfactory structural safety. The complicated and nonlinear dynamic platform behavior implies that a wide number of significant uncertainties are introduced to the design process throug
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Carbol, Ladislav. "Měření akustických vlastností stavebních materiálů pomocí pseudonáhodné sekvence." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-355599.

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The thesis deals with research of pulse compression of the acoustic signal in terms of applications in civil engineering. Based on the study and analysis of these methods, automated measuring equipment for non-destructive testing with pseudorandom sequence of maximum length and automated signal analysis, have been designed and implemented. In a single test cycle are obtained three parameters that characterize the linear and nonlinear behavior of the sample. A nonlinear parameter, Time of Flight of ultrasonic wave in the sample is further in the work compared with the conventional pulse measuri
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Mockute, Agota. "Suitability of wave loading models for offshore wind turbine monopiles in rough seas." Doctoral thesis, 2019. http://hdl.handle.net/2158/1178434.

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This thesis discusses the suitability of numerical wave loading models for monopile-supported offshore wind turbines in rough seas, where models tend to lose validity and dangerous nonlinear phenomena occur.
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Libros sobre el tema "Nonlinear wave loading"

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S, Kim Michael, Holcomb Franklin H, and Construction Engineering Research Laboratories (U.S.), eds. Effects of harmonics on EMI/RFI filters operating under nonlinear loading conditions. US Army Corps of Engineers, Construction Engineering Research Laboratories, 1993.

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Conner, Mark P. Shear wave measurements to determine the nonlinear elastic response of fused silica under shock loading. 1988.

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Capítulos de libros sobre el tema "Nonlinear wave loading"

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Han, Seon Mi, and Haym Benaroya. "Environmental Loading-Waves and Currents." In Nonlinear and Stochastic Dynamics of Compliant Offshore Structures. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-015-9912-2_4.

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Zhang, Chuang, Longlong He, Suzhen Liu, and Qingxin Yang. "Simulation and Experimental Study of Closed Crack Detection by Ultrasonic Nonlinearity Under Electromagnetic Loading." In Studies in Applied Electromagnetics and Mechanics. IOS Press, 2020. http://dx.doi.org/10.3233/saem200017.

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The reliability of micro-damage detection of metal materials plays a crucial role in the safe and reliable operation of large equipment. In recent years, nonlinear ultrasonic nondestructive testing technology has achieved good development in closed cracks detection, but the problem of nonlinear ultrasonic detection of closed cracks is weak response signal and vulnerable to external interference. This paper realizes the modulation of the ultrasonic wave by electromagnetic loading at the closed cracks, which can effectively enrich the frequency components of nonlinear ultrasonic and magnify the
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West, Bruce J. "LEVY STATISTICS OF WATER WAVE LOADING ON SHIPS AND PLATFORMS." In Stochastically Excited Nonlinear Ocean Structures. WORLD SCIENTIFIC, 1998. http://dx.doi.org/10.1142/9789812816504_0010.

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Kokkali Panagiota, Abdoun Tarek, and Anastasopoulos Ioannis. "Centrifuge Modeling of Rocking Foundations on Sand." In From Fundamentals to Applications in Geotechnics. IOS Press, 2015. https://doi.org/10.3233/978-1-61499-603-3-1399.

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Shallow foundations supporting slender structures are often subjected to extreme lateral loading such as multi-cycle wind and wave loads in offshore environments or strong seismic shaking. A number of nonlinear phenomena can occur in such conditions such as sliding on and uplifting from the supporting soil or even soil failure in the form of development of ultimate bearing capacity mechanisms. Residual settlement and rotation of the supported structural system are then unavoidable. While the principle of Performance Based Design that allows the nonlinear behavior of structural components has b
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Stokoe II, Kenneth H., Zalachoris George, Cox Brady, and Park Kwangsoo. "Field Evaluations of the Effects of Stress State, Strain Amplitude and Pore Pressure Generation on Shear Moduli of Geotechnical and MSW Materials." In Deformation Characteristics of Geomaterials. IOS Press, 2011. https://doi.org/10.3233/978-1-60750-822-9-120.

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Investigations of parameters that affect the dynamic properties of geotechnical materials are regularly performed in the laboratory. For municipal solid waste (MSW), dynamic laboratory studies are only beginning to be performed. Parametric studies of both materials are rarely, if ever, performed in the field. In the past decade, field methods have been developed with which parametric investigations can be conducted. The field methods involve applying staged, static and dynamic loads at the ground surface using footings or load plates as a surface platen. Horizontal dynamic loading to the plate
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Lissenden, Cliff J. "Finite amplitude pulse loading." In Nonlinear Ultrasonic Guided Waves. IOP Publishing, 2024. http://dx.doi.org/10.1088/978-0-7503-4911-6ch9.

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Suazo Gonzalo and Fourie Andy. "Numerical simulation of blast response of cemented paste backfills." In From Fundamentals to Applications in Geotechnics. IOS Press, 2015. https://doi.org/10.3233/978-1-61499-603-3-2394.

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The stopes left after underground ore extraction are sometimes filled with a mixture of recycled full stream tailings, mine process water and a hydraulic binder agent such as cement. This material is usually known as cemented paste backfill (CPB) and has gained great popularity in underground operations in the recent past. In order to retain the fill inside the stope a barricade is constructed across the access drive. These stopes are usually subjected to blast loading resulting from the extraction of contiguous ore body. Understanding the dynamic response of the stopes at early curing ages ma
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Actas de conferencias sobre el tema "Nonlinear wave loading"

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Ma, Rujian, Guixi Li, and Dong Zhao. "Spectral Analysis of Nonlinear Random Wave Loadings." In ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2005. http://dx.doi.org/10.1115/omae2005-67287.

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The spectral analysis of nonlinear random wave loadings on circular cylinders is performed in this paper by means of nonlinear spectral analysis. The study is carried out by expressing the wave profile and velocities of water particles as a nonlinear composition of the first order wave profile. Under the assumption of the first order wave profile being a zero-mean Gaussian process, the random wave spectra of finite amplitude waves are given. In order to solve the loading spectra of the finite amplitude random waves, the drag force is extended into power series of velocity. The loadings of the
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Spidsoe, N., H. P. Brathaug, and O. Skjåstad. "Nonlinear Random Wave Loading on Fixed Offshore Platforms." In Offshore Technology Conference. Offshore Technology Conference, 1986. http://dx.doi.org/10.4043/5101-ms.

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Yue, Jingxia, Lihua Peng, Wengang Mao, Chi Zhang, Wei Dong, and Zhentao Zhu. "Research on Ship Structural Fatigue Damage Under Nonlinear Wave Bending Moment." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-62328.

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Loads acting on ship structures are complex and randomly over time and the nonlinear effect caused by wave loading is one of the research focus. The linear and nonlinear vertical wave bending moment (VBM) in different speeds and sea states and their effects on ship structural fatigue strength were investigated for a flat container with high ratio of width to depth. The VBM under the linear regular waves and irregular waves were calculated based on the three dimension (3D) potential theory. The considered nonlinear wave loading was caused by sea pressure near the mean free surface as well as th
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Lan, Jian, Zhen Liu, and Chensong Xianyu. "Experimental Study on Wave and Wave-Current Loads on Vertical Surface-Piercing Column Structures." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-41278.

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Interactions between steep waves and a vertical surface-piercing cylinder as well as two cylinders in tandem arrangement with different spacings are investigated experimentally in this study. The focus of this study is on nonlinear wave and wave-current loads on structures. It is further aimed at investigating the higher harmonic loads and secondary loading cycle. The influence of non-dimensional parameters Kc, kA and Fr on the wave forces exerted on the structures is examined. The effect of spacing between two columns on the wave and wave-current loads is analyzed in depth. It is found that w
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Laksari, Kaveh, Mehdi Shafieian, Kurosh Darvish, and Keyanoush Sadeghipour. "Shock Wave Propagation as a Mechanism of Injury in Nonlinear Viscoelastic Soft Tissues." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64717.

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This study investigates the propagation of shock waves and self-preserving waves in soft tissues such as brain as a mechanism of injury in high rate loading conditions as seen in blast-induced neurotrauma (BINT). The derived mathematical models indicate that whereas linear viscoelastic models predict only decaying waves, instances of such phenomena as shock can be achieved in nonlinear media. In this study, a nonlinear viscoelastic material model for brain tissue was developed in compression. Furthermore, nonlinear viscoelastic wave propagation in brain tissue was studied and a criterion for t
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Ding, Haoyu, Jun Zang, Guangwei Zhao, et al. "Experimental Investigation of Nonlinear Forces on a Monopile Offshore Wind Turbine Foundation Under Directionally Spread Waves." In ASME 2024 43rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/omae2024-125160.

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Abstract Accurate prediction of nonlinear wave loading is crucial for designing marine and offshore structures, yet it remains a challenging task. Prior research has primarily focused on uni-directional extreme sea states, revealing that linear loading cannot accurately represent the total wave forces acting on offshore wind turbine foundations, with significant contributions from high-order harmonics. This study broadens the scope to include multi-directional and bi-directional wave interactions with monopile offshore wind turbine foundations. We use a phase-based harmonic separation method t
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Abbasi, M., and A. R. M. Gharabaghi. "Study the Effect of Wave Directionality on Dynamic Nonlinear Behavior of Jack-Up Subjected to Wave and Earthquake Loading." In ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2007. http://dx.doi.org/10.1115/omae2007-29350.

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Sea waves are random in nature as they propagate with different frequencies and in different directions. In literature, there are several studies about dynamic behavior of marine structures under random waves in frequency domain, but little or nothing has been done about wave directionality. In this paper, the behavior of a typical jack-up platform operating in Caspian Sea is studied. In order to model the interaction between spudcan and surrounding soil, it was modeled separately by PLAXIS software. The applied soil properties are based on the field measurements. The results from plastic anal
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Najafian, G., and N. I. Mohd Zaki. "Finite-Memory Nonlinear System Modelling of Offshore Structures." In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57755.

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Offshore structures are exposed to random wave loading in the ocean environment, and hence the probability distribution of the extreme values of their response to wave loading is of great value in the design of these structures. Due to nonlinearity of the drag component of Morison wave loading and also due to intermittency of wave loading on members in the splash zone, the response is often non-Gaussian; therefore, simple techniques for derivation of their extreme response probability distributions are not available. However, according to a recent paper, in the absence of current, the response
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Shen, Cong, and Nian-Zhong Chen. "Wave-Induced Loading Simulation for a Semi-Submersible FOWT Platform Using CFD-SWENSE Coupled Solver." In ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/omae2023-104383.

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Abstract The low-frequency wave-induced loading on semi-submersible floating wind turbines is normally small, but the loading can result in large motions due to resonant responses in surge and pitch. Therefore, one of the most important concerns regarding the numerical simulation of wave-induced loading on floating wind turbines is how to accurately predict the difference-frequency wave-induced loading, especially near the resonance frequencies. The potential flow method based on the Morrison formula cannot consider the fluid viscosity, and thus the numerical accuracy of the prediction of wave
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Rabie, Oruba, and Yahia M. Al-Smadi. "Dynamic Response of RC Structures Subjected to Blast Wave Shock Loading." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-88658.

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The collapse of significant structures caused by terrorist attacks in the past decades has motivated engineers to study the stability of current structural systems and their susceptibility to collapse. This collapse usually occurs due to blast waves generated by the high explosive bursts in the air that hit the structural components of the buildings leading to catastrophic damages which unfortunately happen before the evacuation. In an effort to find a safety criterion for buildings subjected to blasting; this study uses the nonlinear FEA explicit software LS-DYNA to highlight the effect of bl
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