A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Nonlinear Vibrations of Deepwater Catenary Riser Subjected to Wave Excitation
The purpose of this research is to present the mathematical model for the nonlinear vibration analysis of a deepwater catenary riser subjected to a wave excitation. The mathematical model of the catenary riser is derived from the work-energy principle, including the geometrical nonlinearity and nonlinear loading from a square drag term of hydrodynamic force. The finite element method is used to form the equation of motion for solving the numerical solution. The nonlinear equation of motion can be written in the appropriate form, which is convenient to perform the numerical integration. The Newmark time integration incorporated direct iteration is used to solve the nonlinear vibration response of the catenary riser. The nonlinear forced vibration analysis is carried out for both small and large vibration amplitudes. From numerical investigation, it was found that the vibration response of the riser due to wave force is a harmonic motion and the vibration amplitude increases as the increasing in wave amplitude. In addition, the effect of nonlinear geometry has a significant influence on the vibration amplitude of the riser.
Nonlinear Vibrations of Deepwater Catenary Riser Subjected to Wave Excitation
The purpose of this research is to present the mathematical model for the nonlinear vibration analysis of a deepwater catenary riser subjected to a wave excitation. The mathematical model of the catenary riser is derived from the work-energy principle, including the geometrical nonlinearity and nonlinear loading from a square drag term of hydrodynamic force. The finite element method is used to form the equation of motion for solving the numerical solution. The nonlinear equation of motion can be written in the appropriate form, which is convenient to perform the numerical integration. The Newmark time integration incorporated direct iteration is used to solve the nonlinear vibration response of the catenary riser. The nonlinear forced vibration analysis is carried out for both small and large vibration amplitudes. From numerical investigation, it was found that the vibration response of the riser due to wave force is a harmonic motion and the vibration amplitude increases as the increasing in wave amplitude. In addition, the effect of nonlinear geometry has a significant influence on the vibration amplitude of the riser.
Nonlinear Vibrations of Deepwater Catenary Riser Subjected to Wave Excitation
Lecture Notes in Civil Engineering
Geng, Guoqing (editor) / Qian, Xudong (editor) / Poh, Leong Hien (editor) / Pang, Sze Dai (editor) / Lertchanchaikun, Nutwadee (author) / Klaycham, Karun (author) / Athisakul, Chainarong (author) / Chucheepsakul, Somchai (author)
2023-03-14
14 pages
Article/Chapter (Book)
Electronic Resource
English
Catenary riser , Finite element method , Hydrodynamic wave , Large amplitude vibration , Nonlinear vibration Engineering , Building Construction and Design , Structural Materials , Solid Mechanics , Sustainable Architecture/Green Buildings , Light Construction, Steel Construction, Timber Construction , Offshore Engineering
Fatigue performance of deepwater steel catenary riser considering nonlinear soil
| British Library Online Contents | 2017
Nonlinear free vibrations and vortex-induced vibrations of fluid-conveying steel catenary riser
| Online Contents | 2012
A mechanical model for deepwater steel catenary riser transfer process during installation
| SAGE Publications | 2013
DEEPWATER RISERS - Steel catenary versus flexible risers
Online Contents | 1996