scholarly journals Dynamic Responses of Composite Structures with Fluid-Structure Interaction

10.5772/14625 ◽  
2011 ◽  
Author(s):  
Young W. ◽  
Angela C.
Keyword(s):  
Composite Structures ◽  
Fluid Structure Interaction ◽  
Dynamic Responses ◽  
Fluid Structure ◽  
Structure Interaction

Study of Fluid Effects on Dynamics of Composite Structures

2009 ◽  
Author(s):  
Y. W. Kwon
Keyword(s):  
Composite Structures ◽  
Fluid Structure Interaction ◽  
Structural Models ◽  
Dynamic Responses ◽  
Water Medium ◽  
Reasonable Accuracy ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Parametric Studies ◽  
Structural Behaviors

This study investigates the effect of fluid-structure interaction on dynamic responses of submerged composite structures subjected to a mechanical loading. The research focuses on finding various parameters that affect the transient dynamic responses of these structures. Coupled fluid-structure interaction analyses of composite structures surrounded by a water medium are conducted numerically for various parametric studies, and their results are compared to those of dry structures. Furthermore, modified dry structural models are developed to represent the dynamic responses of the same structures under water with a reasonable accuracy. Those models promise to be beneficial to predict structural behaviors under water without an expensive computational or experimental cost.

Study of Fluid Effects on Dynamics of Composite Structures

2011 ◽  
Vol 133 (3) ◽  
Author(s):  
Y. W. Kwon
Keyword(s):  
Composite Structures ◽  
Fluid Structure Interaction ◽  
Dynamic Responses ◽  
Water Medium ◽  
Reasonable Accuracy ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Parametric Studies ◽  
Structural Behaviors

This study investigated the effect of fluid-structure interaction on dynamic responses of submerged composite structures subjected to a mechanical impact loading. The research was focused on finding various parameters that affected the transient dynamic responses of the submerged composite structures. To this end, coupled fluid-structure interaction analyses of composite structures surrounded by a water medium were conducted numerically for various parametric studies and their results were compared with those of dry (i.e., in air) structures in order to understand the role of each parameter under study. Furthermore, modified dry structural models were developed to represent the dynamic responses of the same structures under water with a reasonable accuracy. Those models would be beneficial to predict the structural behaviors under water without an expensive computational or experimental cost.

Hydroelastic Modeling of a Compliant Offshore Tower: Formulation

2003 ◽  
Author(s):  
Jinzhu Xia ◽  
Quanming Miao ◽  
Nicholas Haritos ◽  
Beverley Ronalds
Keyword(s):  
Oil And Gas ◽  
Equations Of Motion ◽  
Fluid Structure Interaction ◽  
Coupled System ◽  
Dynamic Responses ◽  
Variation Principle ◽  
Diffraction Radiation ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Radiation Theory

Offshore oil and gas can be produced using a variety of platform types. One option, the compliant offshore tower, has proven to be an economic solution in moderately deep water (300–600m). In this paper, the wave-induced global dynamic responses of a compliant tower in wind, current and waves are studied in the context of fluid-structure interaction. A beam undergoing transverse and axial motion models the vertical member of the tower. The beam is supported by a linear-elastic torsional spring at the bottom end and a point mass and a buoyant chamber is located at the top free end. The fluid forces on the beam are modeled using the Morison equation while the hydrodynamic forces on the chamber are obtained based on the three-dimensional diffraction-radiation theory. By applying Hamilton’s variation principle, the equations of motion are derived for the coupled fluid-structure interaction system. The non-linear coupled system equations that emanate from this new approach can then be solved numerically in the time domain.

scholarly journals A Fluid-Structure Interaction Model of Pressurised Composite Structures Subjected to Blast Loading

2010 ◽  
Vol 19 (3) ◽  
pp. 096369351001900
Author(s):  
G. Mohamed ◽  
C. Soutis ◽  
A. Hodzic
Keyword(s):  
Composite Structures ◽  
Structural Integrity ◽  
Numerical Study ◽  
Fluid Structure Interaction ◽  
Dynamic Crack ◽  
Arbitrary Lagrangian Eulerian ◽  
Fluid Structure ◽  
Explicit Finite Element ◽  
Structure Interaction ◽  
Finite Element Software

A numerical study into the dynamic behaviour of hybrid pressurised barrels manufactured from GLARE (Glass fibre Reinforced laminate) has been performed using the Arbitrary-Lagrangian-Eulerian (ALE) method that accounts for fluid structure interaction within the explicit finite element software RADIOSS. The results high-lighted the importance of the geometrical features of the closed barrel when assessing the shock wave propagation of the blast wave. Also the effect of pre-pressurisation was studied which proved significant in providing additional internal energy to the system. It was concluded that pressurisation should be accounted in all future studies to model the dynamic crack growth and structural integrity of typical aircraft structures subjected to blast.

scholarly journals Numerical Analysis of the Dynamic Responses of Multistory Structures Equipped with Tuned Liquid Dampers Considering Fluid-Structure Interactions

2019 ◽  
Vol 13 (1) ◽  
pp. 289-300 ◽  
Author(s):  
Bui Pham Duc Tuong ◽  
Phan Duc Huynh ◽  
Tan-Trung Bui ◽  
Vasilis Sarhosis
Keyword(s):  
Fluid Structure Interaction ◽  
Fluid Pressure ◽  
Dynamic Responses ◽  
Water Tank ◽  
Tank Wall ◽  
Tuned Liquid Damper ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Tuned Liquid Dampers ◽  
Liquid Dampers

Aims: The paper analyzes the effectiveness of tuned liquid damper in controlling the vibration of high rise building. The new contribution is considering the fluid-structure interaction of a water tank as a Tuned Liquid Dampers (TLD). Background: Currently, buildings are being built higher and higher, which requires TLDs to be larger as well. Therefore, the fluid pressure acting on the tank wall is more significant. In previous studies of liquid sloshing in TLDs, researchers simply ignored the effect of liquid pressure acting on the tank walls by making the assumption that the tanks are rigid. Currently, the failure of a tank because of FSI occurs regularly, so this phenomenon cannot be ignored when designing the tanks in general and TLDs in particular. Objective: To investigate the thickness of the tank wall affect to the TLD mechanism. Method: Numerical method was used for this research. Results: A TLD could be easy to design; however one could not bypass the fluid-structure interaction by assuming the tank wall is rigid. Conclusion: This kind of damper is very good to mitigate the dynamic response of structrure.

scholarly journals Dynamic analysis of 1100 kV composite bushing considering oil and structure interaction effects

2019 ◽  
Vol 272 ◽  
pp. 01011
Author(s):  
Hong Yuan Yue ◽  
Jian Yun Chen ◽  
Qiang Xu
Keyword(s):  
Fluid Structure Interaction ◽  
Time History ◽  
Bending Moment ◽  
Dynamic Responses ◽  
Electrical Network ◽  
Mass Model ◽  
Sph Method ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Primary Object

The 1100 kV composite bushing is one of the most important components in the ultra-high voltage electrical network. Therefore, the safety and integrity must be ensured during the operation under any conditions such as an earthquake. The primary object of this paper is to investigate the effects of oil in the dome on the dynamic responses of the 1100 kV composite bushing when subjected to horizontal seismic ground motion. The coupled finite element method (FEM) and smoothed particle hydrodynamics (SPH) method is adopted to simulate the fluid structure interaction (FSI) between the oil and the dome. The influences of particle’s distributions on the numerical results and computational efficiencies are discussed. For comparison with the coupled FEM/SPH method, the additional mass model is also performed. The influences of oil oscillation on the time history of absolute acceleration of 1100 kV composite bushing are discussed, as well as the relative displacement and the bending moment at the base of the structure. The results show that the motion of oil in the dome with free surface can limit the vibration of the 1100 kV composite bushing and can efficiently dissipate the kinetic energy of the 1100 kV composite bushing by fluid-structure interaction.

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