水下油气管道随机振动的模拟算法  

The simulated algorithm of random vibration on underwater pipelines for oil and gas

作　　者：姚恒申[1] 江晓涛[2] 徐璧华[3] 

机构地区：[1]西南石油大学理学院,成都610500 [2]重庆工商大学理学院,重庆400067 [3]西南石油大学石油工程学院,成都610500

出　　处：《周口师范学院学报》2009年第2期7-10,共4页Journal of Zhoukou Normal University

基　　金："油气藏地质及开发工程"国家重点实验室开放课题基金资助项目(No.PLN0604)

摘　　要：水下穿越输油气管道具有施工方便、投资省等优点.但水下穿越段一旦遭到破坏,其破坏点不易被发现,修复困难,因此水下管道的振动分析研究具有重要意义.文章从分析水下管道的受力情况出发,建立了描述水下管道振动的随机微分方程,求解出描述振动受力的随机过程,从而给出这种振动受力的计算和模拟方法.其结果可引申到在流体中运动的物体,如大气中的各种飞行器及其部件的振动模拟以及寿命预测等应用研究领域.Laying underwater pipelines for oil and gas has the advantages of convenient construction and economical investment. But once the underwater section of the pipeline is damaged, it is not easy to find the broken points and difficult to repair. It is very important to study the analysis of vibration on the underwater pipelines. Starting from the analysis of the forces on the pipelines, in this paper, the stochastic differential equation that describes the vibration of underwater pipelines has been established, then the random process that describes random vibration was solved and the simulated algorithm of random vibration was given. This results may be applied to the moving body in the fluid, such as the vibration simulation of the various aircrafts and their parts in the atmosphere, and the applied field of the life forecast.

关 键 词：水下油气管道 随机微分方程 伽辽金法 

分 类 号：O343.5[理学—固体力学]