Numerical Simulation Technique for Flexible Risers Under Tension and Inner Pressure
ABAQUS/Explicit analysis module was used in this paper to simulate the riser”s behavior under tension force and inner pressure. It presents a technique to create detailed finite element model and to analyze flexible risers automatically by using input geometry parameters. In the FEM model, all layers are modeled separately with contact interfaces between each layer. The FEM model includes the main features of the riser geometry with very little simplifying assumptions. A 3D FEM model considering contact interaction, geometric nonlinearity, and friction has been employed to accurately simulate the structural behavior of an eight-layer flexible riser under tension and inner pressure load cases. The model was solved using a fully explicit time-integration scheme implemented in a parallel environment on an eight-processor cluster and 24-G memory. The results from the numerical simulation show that the numerical model takes into account various details of the physical riser while they are not possible to include in the analytical models. It has been shown here that the detailed finite element model can be used as a virtual testing machine to high efficiently obtain parametric studies on the riser and to predict its mechanics behavior under various load case and bound condition. It can in turn lead to improved practical engineering design of riser.
有限元模型 数值模拟 立管力学行为
JU Jinsan Ding Min ZHANG Guangkui Sun Jun JIANG Xiugen
Dept. of Civil Engineering, China Agricultural University, Beijing, 100083, China
国内会议
太原
英文
1-14
2011-07-01（万方平台首次上网日期，不代表论文的发表时间）