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Modeling of forced vibration of marine structural systems under dynamic loads of sea waves

Jafari, A ; Sharif University of Technology | 2007

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  1. Type of Document: Article
  2. Publisher: 2007
  3. Abstract:
  4. Predicting the reaction and function of marine structures towards sea waves, is of significant importance in the design of them. There are some uncertain parameters which can be optimized to increase safety factors as well as to decrease the costs. Knowing the maximum oscillation of marine structures due to dynamic forces will play a great role on structures' safe design. The objective of this paper is to employ a reliable numerical technique to analyze the interaction between marine structures and sea waves. Simulink is an object oriented dynamic simulation package. It can develop new analysis tools aimed at a better understanding and prediction of the physics that governs the behavior of maritime structures. Simulink has the capability of solving sets of linear and nonlinear ordinary differential equations in the base of numerical methods. It is a powerful tool for modeling, simulating and analyzing multidomain dynamic systems. Its interactive environment is a graphical block diagramming tool and an customizable set of block libraries. In this paper, the authors base on Simulink developed a block diagram for modeling free vibration and forced vibration of a marine structural system under dynamic loads i.e. sea waves. The structure is discretisized as a mass concentration system and its response under the dynamic load of waves is analyzed. Finally the numerical solution is compared with analytical solution. The computations are in good agreement with analytical data with a high order of accuracy
  5. Keywords:
  6. Analysis tools ; Analytical data ; Block diagrams ; Block libraries ; Customizable ; Dynamic forces ; Forced vibration ; Free vibration ; Graphical blocks ; Interactive environments ; Maritime structures ; Mass concentration ; Multidomains ; Nonlinear ordinary differential equation ; Numerical solution ; Numerical techniques ; Object oriented ; Order of accuracy ; Safe designs ; Sea waves ; Simulink ; Solving Set ; Structural systems ; Uncertain parameters ; Computer simulation ; Dynamic loads ; Dynamical systems ; Numerical methods ; Ocean engineering ; Ocean structures ; Ordinary differential equations ; Ports and harbors ; Safety factor ; Water waves
  7. Source: 18th Australasian Coastal and Ocean Engineering Conference 2007, COASTS 2007 and the 11th Australasian Port and Harbour Conference 2007, PORTS 2007, Melbourne, VIC, 18 July 2007 through 20 July 2007 ; 2007 , Pages 560-565 ; 9781622764280 (ISBN)
  8. URL: https://search.informit.org/doi/10.3316/informit.814918702328302