| 圆柱形弹性壳液耦合系统大幅低频重力波振动机理的研究 |
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| 引用本文： | 刘习军,刘振宇,杜颖,王大钧,贾启芬.圆柱形弹性壳液耦合系统大幅低频重力波振动机理的研究[J].应用力学学报,2006,23(2):172-176. |
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| 作者姓名： | 刘习军 刘振宇 杜颖 王大钧 贾启芬 |
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| 作者单位： | 1. 天津大学,天津,300072
2. 北京大学,北京,100871 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 以圆柱形弹性壳液耦合系统为研究对象,根据非线性振动理论,建立了多自由度的非线性振动方程。通过数值计算,发现当激振力足够大,且激振力的频率在壳体固有频率与重力波固有频率之和的一个窄频带内时,会产生大幅低频重力波。从而解释了这一现象产生的振动机理。理论结果与实验结果基本吻合。
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| 关 键 词： | 弹性壳液耦合 重力波 非线性振动 |
| 文章编号： | 1000-4939（2006）02-0172-05 |
| 收稿时间： | 2005-04-28 |
| 修稿时间： | 2005-04-282005-12-07 |
Mechanism of Low-Frequency Large-Amplitude Gravity Waves of Liquid in Cylindrical Shell Container |
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| Liu Xijun,Liu Zhenyu,Du Ying,Wang Dajun,Jia Qifen.Mechanism of Low-Frequency Large-Amplitude Gravity Waves of Liquid in Cylindrical Shell Container[J].Chinese Journal of Applied Mechanics,2006,23(2):172-176. |
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| Authors: | Liu Xijun Liu Zhenyu Du Ying Wang Dajun Jia Qifen |
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| Abstract: | According to the nonlinear vibration theory,a multiple-degree-of-freedom system nonlinear equations is constructed.The numerical results show that low frequency and large amplitude gravity waves can be generated by the sufficiently large external excitation within a narrow the frequency band which appoaches to the sum of the excitation frequency and the shell's inherent frequency.And the theoretical analysis coincides with the numerical evaluation. |
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| Keywords: | coupled liquid and elastic shell system gravity wave nonlinear vibration |
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