文档介绍：Ocean Engineering 38 (2011) 793–803
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Ocean Engineering
journal homepage: ate/oceaneng
An updated Lagrangian finite element formulation for large displacement
dynamic analysis of three-dimensional flexible riser structures
. Hosseini Kordkheili a, H. Bahai b,n, M. Mirtaheri c
a Aerospace Engineering Department, Sharif University of Technology, Tehran, Iran
b School of Engineering and Design, Brunel University, Uxbridge, UK
c Department of civil Engineering, KNT University, Tehran, Iran
article info abstract
Article history: An updated Lagrangian finite element formulation of a three-dimensional annular section beam
Received 6 June 2010 element is presented for large displacement and large rotation dynamic analyses of flexible riser
Accepted 6 February 2011 structures. In this formulation a new linearization method is used to avoid uracies normally
Editor-in-Chief: . Incecik associated with other linearization schemes. The effects of buoyancy force as well as steady state
Available online 26 February 2011
current loading are considered in the finite element solution for riser structures response. The
Keywords: formulation has been implemented in a nonlinear finite element code and the results pared
Large displacement and rotation with those obtained from other schemes reported in the literature.
Dynamic analysis & 2011 Elsevier Ltd. All rights reserved.
Linearization
Three-dimensional beam element
Flexible riser structures
1. Introduction of fluid properties and corrective Newton–Raphson iteration
was used.
Flexible riser structures are widely used in offshore production McNamara and Lane (1984) studied the two-dimensional
to convey oil between well-heads and offshore rigs. The main response of the linear and nonlinear static and dynamic motions
advantage of flexible risers over the rigid steel risers is their low of offshore systems such as risers and single-leg mooring towers.
bending stiffness