悬跨段海洋管道非线性自由振动分析  

Nonlinear free vibration of suspended pipelines

作　　者：戴英杰[1] 宋甲宗[1] 

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024

出　　处：《大连理工大学学报》1999年第6期756-760,共5页Journal of Dalian University of Technology

摘　　要：根据有限变形理论，大变形管道的运动可视为在静平衡位置附近的小振幅运动． 在已知铺设中管道静平衡位置的基础上，利用样条函数配点法研究了管道面内和面外的非线性自由振动；发现管道自由振动频率随张力增大而减小，随水深增加而增大．According to the finite deformation theory, the motion of a big deformation pipeline is regarded as a small vibration about the static equilibrium position. Based on the known static equilibrium position of the pipeline, using the spline collocation method, this paper deals with the nonlinear free vibration of suspended pipeline both in\|plane and out\|of\|plane. It is found that the frequency value increases when the tension value decreases and the depth of water increases.

关 键 词：自由振动 海底管道 悬跨管道 铺设 非线性振动 

分 类 号：P756.2[天文地球—海洋科学]