%0 Journal Article
%T The analyses of gravity waves in a rectangular elastic fluid-shell coupled system<br>矩形弹性壳液耦合系统中的重力波分析
%A Liu Xijun
%A Zhang Suxia
%A Liu Guoying
%A Jia Qifen
%A Tang Yougang
%A <br>刘习军
%A 张素侠
%A 刘国英
%A 贾启芬
%A 唐友刚
%J 力学学报
%D 2006
%I 
%X The theory and experiment about gravity waves in a rectangular elastic fluid-shell coupled system are presented in this paper. A set of equations are constructed according to fluid and vibration theory. Based on the boundary and initial conditions of the system, the velocity potential of the fluid and the surface wave function of the first gravity wave are obtained. Through the numerical calculation for the equations, the time response curves and response spectrum are given to the first gravity wave. The results show that when gravity wave appears, the shell acts as pendulum and the gravity wave's motion is harmonic. Furthermore, the effects of exciting force and the frequency to the system are also discussed. Only when the force is large enough to conquer the viscid resistance and the frequency is near a certain constant, gravity waves are engendered, which is the result of resonance vibration. At the same time, the experimental study is processed. The phenomena observed are resonance without gravity wave if the system is excited on the shell with a horizontal force and the force is large enough but the frequency out of the scope. When all the conditions are met, large-amplitude and low-frequency gravity waves are observed. All the experimental results show good qualitative agreement with the theoretical results.
%K fluid-shell coupled system
%K rectangular shell
%K gravity waves
%K coupled resonance
%K nonlinear vibration<br>壳液耦合系统
%K 矩形壳
%K 重力波
%K 组合共振
%K 非线性振动
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=4100DA4A1A3BA1B0CE5AD99AE1DFB420&aid=4329AF7651AC184E&yid=37904DC365DD7266&vid=16D8618C6164A3ED&iid=CA4FD0336C81A37A&sid=F24949CFDB502409&eid=4BB057F167CF3A60&journal_id=0459-1879&journal_name=力学学报&referenced_num=7&reference_num=8