上端水平周期运动下悬垂型水下细长体响应幅值包络线的特性分析  

Envelope Features of Response Amplitude of Hanging Underwater Slender Bodies in Upper End Horizontal Periodical Motion

作　　者：从善学 徐雪松[1] CONG Shanxue;XU Xuesong(School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240

出　　处：《上海交通大学学报》2021年第1期32-39,共8页Journal of Shanghai Jiaotong University

基　　金：全海深无人潜水器(ARV)研制(SQ2016YFSF010222)资助项目。

摘　　要：为解决立管等水下细长体作业的安全问题,并提高其作业效率,将悬垂型水下细长体离散为多个分段.根据力学平衡条件和变形协调条件列出每个分段的平衡方程,然后通过MATLAB软件编程求解.当上端水平周期运动时,分别改变上端运动幅值、上端运动周期和下端吊重质量,获得细长体的运动响应幅值包络线.根据数值计算结果,分析得出悬垂型水下细长体响应幅值包络线特性.细长体响应幅值包络线上的最大幅值点一般在上端,随着参数的改变可以转捩为下端.上端运动幅值和周期的变化对最小幅值点的影响较大,而下端吊重质量对其影响较小.通过调整这些参数的取值范围可以控制细长体幅值包络线上最大幅值点和最小幅值点的位置.To improve the safety and operating efficiency of underwater slender bodies,the hanging underwater slender body is divided into several micro segments for analysis.The equilibrium equations of each segment are listed according to the mechanical equilibrium and deformation coordination conditions.Then,the equilibrium equations are solved with MATLAB programming.When the upper end moves horizontally and periodically,the upper end motion amplitude,upper end motion period,and lower end weight are changed separately to obtain the amplitude envelope of hanging underwater slender bodies.Based on the results of numerical calculations,the response envelope characteristics of hanging underwater slender bodies are analyzed.The maximum amplitude point on the amplitude envelope of the slender body is generally at the upper end.As the parameters change,it can be converted to the lower end.Changing the amplitude and period of upper end motion has a greater impact on the minimum amplitude point.The lower end weight has a small influence on the minimum amplitude point.By adjusting the ranges of these parameters,the positions of maximum amplitude point and minimum amplitude point on the amplitude envelope of slender body can be controlled.

关 键 词：细长体 运动响应 柔性段模型 缆绳动力学 

分 类 号：P716.2[天文地球—海洋科学]