... wind energy girder displacement dynamic response bridge tower china government main girder acceleration dynamic response girder end resistance tower girder transverse bridge dynamic response vibration mode frequency foundation asia government cable-stayed bridge coupling...

... deep learning machine learning mode recognition eigenvalue neural network vibration mode accuracy natural frequency recognition loss function mode analysis artificial intelligence ship hull configuration convolutional 512 fem model vgg model grillage vgg-11 classification...

... and corresponding current velocities are employed to investigate the responses of the riser. The numerical results indicate that the dominant crossflow and inline vibration modes are increased with the current velocity. The amplitudes of crossflow and inline vibration modes show periodic variations...

.... displacement internal flow vortex-induced vibration il direction dominant vibration mode simulation vibration mode natural frequency riser vibration response cf direction vibration frequency cylinder numerical simulation internal flow velocity flexible riser amplitude vibration frequency...

... presents the dimensionless RMS amplitudes along the riser span in IL and CF directions. The variations of IL and CF dimensionless RMS amplitudes of three meshes are similar to the experimental results, and the vibration modes are second-order and first-order in IL and CF directions respectively. The CF...

... monetization proceedings international offshore frequency vibration mode indentation containment system cone load polar engineering conference lng coefficient foam top plywood equation liquified natural gas midstream oil & gas displacement field plywood assessment boundary condition...

... piping geometry, flow and operating conditions and also the fluid properties. Finally, mechanical vibrations can lead to fatigue failure. One of the major parameters affecting vibration of subsea piping is the surrounding water. It is known that surrounding water participates in some vibration modes...

... behavior to obtain vibrations up to the fourth vibration mode. The movements were measured by a submerged optical system that captures positions of reflective targets along the model length. This system was tested in five different yaw angles ( θ ): 0, 10, 20, 30 and 45 degrees. Beyond the positions...

... frequency artificial intelligence natural frequency amidship hull girder vibration mode freight & logistics services ship critical wave frequency response energy lloyd Springing Loads and Fatigue Assessment on Large Container Ships *Yongwon Lee, Nigel White, Zhenhong Wang, Jimmy Tong, Ying...

... of freedom method by manual. The recent experimental modal analysis technology is effective for obtaining the damping ratio from full scale vibration measurement results because it carries out identification simultaneously for each vibration modes automatically. Rosenow et al (2006) show damping ratios which...

... of the bending moment can be arbitrary among the three cut sections where the load cells are installed. On the other hand, L/4 was selected in this study instead of 2L/4 because the actual magnitude of the bending moment at 2L/4 was expected to be small in the case of second vibration mode, i.e., three node...

... excitation experiment. Nevertheless, KC (Keulegan-Carpenter) number scaling has to be properly addressed; see also Fernandes et al, 1997. It is therefore important to look at the problem of overall dynamics similarity in an integrated manner. Geometrical similarity of the vibration modes and temporal...

...) has been proposed to solve this FSI problem. It has been found that the existence of internal flow does play an important role in determining the vibration mode, vibration intensity and the magnitude of instantaneous vibration amplitude of the curved riser model, when velocity ratio of internal flow...

... coppe ufrj vibration viscoelastic material application vibration mode natural frequency Vibration Reduction in Steel Catenary Riser Flávia Borges(a), Ney Roitman(a), Carlos Magluta(a), Daniel A. Castello(b) and Ricardo Franciss (c) (a) Civil Engineering Department, COPPE, Federal University...

... factors. From the multi-physics point of view, fluid-structure interaction (FSI) occurs when fluid interacts with a solid structure, exerting pressure to the structure. vortex-induced vibration frequency vibration mode current velocity simulation riser internal flow simulation case...

... 0.001 Distance(m) M as s( nu m be r) the first quadrant the second quadrant the third quadrant the fourth quadrant 0 10 20 30 40 50 -0.001 0 0.001 Distance(m) M as s( nu m be r) 0 10 20 30 40 50 -0.001 0 0.001 Distance(m) M as s( nu m be r) a)4sec b)8sec c)9sec Fig.8 Vibration modes in the case of input...

... vibration mode natural frequency stiffened panel boundary condition decomposition equation beam structure eigenfrequency determinant problem test transversal displacement Vibration Assessment of Ship Structures Adrian Constantinescu ANAST, University of Liege Liege, Belgium Alain Nême EA 4325...

... theory, ASAC methods can be divided into two category: One method is based on the vibration mode of structure. The control of sound radiation from structure by vibration mode utilize the mechanism of modal suppression, the control force was put on the position of maximum responses of vibrate to suppress...

... circular plate classic theory natural frequency shear deformation sector plate anisotropic circular plate transcendental equation natural vibration mode circumference vibration mode Dynamic Analysis of Anisotropic Circular Plates Considering the Effect of Shear Deformation - Analysis...

... is developed which allows control of energy flow patterns, thus reducing or retaining vibratory energy flow in a particular vibration mode of the system. This is achieved through analyzing energy flow characteristics and designing an appropriate damping distribution in the system to adjust its characteristic...