| 叠层板状结构流致振动特性研究 |
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| 引用本文： | 范晨光,杨翊仁.叠层板状结构流致振动特性研究[J].工程力学,2007,24(9):31-36. |
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| 作者姓名： | 范晨光 杨翊仁 |
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| 作者单位： | 西南交通大学应用力学与工程系,成都,610031 |
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| 基金项目： | 教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 将管道理论引入叠层板状结构的流致振动研究,在势流理论下,基于输流管道的哈密顿原理,建立叠层板状结构的流致振动模型,用微分求积法对模型的运动方程进行求解,研究系统零流速状态的固有频率和模态,运用特征值分析与响应分析结合的方法,确定系统失稳的临界流速与形式。结果表明,悬臂支承模型发生颤振失稳;两端固支模型发生屈曲失稳。
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| 关 键 词： | 振动 稳定性 微分求积法 叠层板 不可压缩流 临界流速 |
| 文章编号： | 1000-4750（2007）09-0031-06 |
| 修稿时间： | 2006-02-16 |
STUDY ON FLOW-INDUCED VIBRATION OF A LAMINATED-PLATE-TYPE STRUCTURE |
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| FAN Chen-guang,YANG Yi-ren.STUDY ON FLOW-INDUCED VIBRATION OF A LAMINATED-PLATE-TYPE STRUCTURE[J].Engineering Mechanics,2007,24(9):31-36. |
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| Authors: | FAN Chen-guang YANG Yi-ren |
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| Affiliation: | Dept. of Appl. Mechanics and Eng., Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | The pipe theory is introduced into the flow-induced vibration research of a plate-type structure. The mechanical model is set to describe the plate-type structure in potential flow. The dynamic equation is deduced based on Hamilton principle. The differential quadrature method is used to solve the differential equations. The system’s natural frequencies and modes are investigated when the flow’s velocity is zero. The critical velocity and the form of instability are studied by the means of eigenvalue analysis and response analysis. The results show that the cantilevered model has the flutter instability over the critical velocity, the fixed model has buckling instability over the critical velocity. |
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| Keywords: | vibration stability differential quadrature method plate-type structure incompressible flow critical flow velocity |
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