Nonlinear Behaviour of Coflexip Risers

作     者：Kamal Zare T. K. Datta 

作者机构：Department of Civil Engineering Indian Institute of Technology Hauzkhas New Delhi-110016 India Department of Civil Engineering Indian Institute of Technology Hauzkhas New Delhi-110016 India 

出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)

年 卷 期：2001年第16卷第4期

页      面：479-490页

核心收录：

学科分类：08[工学] 080101[工学-一般力学与力学基础] 0801[工学-力学（可授工学、理学学位）] 

主　　题：lazy 'S' riser coflexip pipe flexible riser mid-arch buoy geometric nonlinearily 

摘      要：A modified Newton-Raphson iterative technique is formulated for obtaining the static configuration of the Lazy S flexible marine riser between the floater and mid-arch buoy under its submerged self weight and the applied top tension. The geometrically non-linear problem is solved by finite difference with the above technique. The problem is formulated as a regular boundary value problem with specified moments and deflections at both ends. Usually the bending stiffness of the flexible riser made of Coflexip pipe is very low. By use of the above analysis, several flexible riser configurations are analyzed and their characteristic behaviors are investigated. Also, changes in the riser characteristics due to quasi-static motion of the floater end are estimated for the safety of the riser layout.