摘要
利用有限单元法对三维海底悬空管道的自振特性进行了模拟分析研究,建立了悬空管道的三维分析模型,得到了三维管道刚度和质量矩阵,并形成了悬空管道的自由振动方程。采用机械振动的广义JACOBI理论编制JACOBI程序,计算固有频率的数值解及临界悬空长度。结果表明,采用JACOBI程序可以快速、方便地求出海底悬空管道的固有频率,为海洋工程的管道设计提供依据。
Based on the finite element method, the simulation and analysis of free vibration characteristic of subsea suspended pipeline is studied. The three-dimension analysis model of suspended pipeline is established,the stiffness matrix and mass matrix are obtained,and the free vibration equation is developed. The generalized JACOBI principle of mechanical vibration is applied to write JACOBI program,to calculate the numerical solution of the intrinsic frequency and the critical suspended length. The solutions show that using JACOBI program can obtain the intrinsic frequency of subsea suspended pipeline quickly and conveniently,so as to provide the foundation to the pipeline design of marine engineering.
出处
《油气储运》
CAS
北大核心
2005年第8期15-18,共4页
Oil & Gas Storage and Transportation
