Static and Dynamic Analysis of Mooring Lines by Nonlinear Finite Element Method  

作　　者：杨敏冬 滕斌 

机构地区：[1]State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology

出　　处：《China Ocean Engineering》2010年第3期417-430,共14页中国海洋工程（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No.11072052);the National High Technology Research and Development Program of China (863 Program,Grant No.2006AA09A109-3)

摘　　要：This study has focused on developing numerical procedures for the static and dynamic nonlinear analysis of mooring lines. A geometrically nonlinear finite element method using isoparametric cable element with two nodes is briefly presented on the basis of the total Lagrangian formulation. The static and dynamic equilibrium equations of mooring lines are established. An incremental-iterative method is used to determine the initial static equilibrium state of cable systems under the action of self weights, buoyancy and current. Also the Newmark method is used for dynamic nonlinear analysis of ocean cables. Numerical examples are presented to validate the present numerical method, and examine the effect of various parameters.This study has focused on developing numerical procedures for the static and dynamic nonlinear analysis of mooring lines. A geometrically nonlinear finite element method using isoparametric cable element with two nodes is briefly presented on the basis of the total Lagrangian formulation. The static and dynamic equilibrium equations of mooring lines are established. An incremental-iterative method is used to determine the initial static equilibrium state of cable systems under the action of self weights, buoyancy and current. Also the Newmark method is used for dynamic nonlinear analysis of ocean cables. Numerical examples are presented to validate the present numerical method, and examine the effect of various parameters.

关 键 词：geometrically nonlinear finite element mooring line incremental iteration method 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]