| Flow-Induced Vibration of A Nonlinearly Restrained Curved Pipe Conveying Fluid |
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| 作者姓名： | 王琳 倪樵 黄玉盈 |
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| 作者单位： | DepartmentofMechanics,HuazhongUniverisityofScienceandTechnology,Wuhan430074,China |
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| 基金项目： | TheworkwassupportedbytheNationalNaturalScienceFoundationofChina (GrantNo .1 0 2 72 0 5 1 ) |
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| 摘 要： | Investigated in this study is the flow-induced vibration of a nonlinearly restrained curved pipe conveying fluid. The nonlinear equation of motion is derived by equilibrium of forces on microelement of the system under consideration. The spatial coordinate of the system is discretized by DQM (differential quadrature method). On the basis of the boundary conditions, the dynamic equation is solved by the Newton-Raphson iteration method. The numerical solutions reveal several complex dynamic motions for the variation of the fluid velocity parameter, such as limit cycle motion, buckling and so on. The result obtained also shows that the sub parameter regions corresponding to the several motions may change with the variation of some parameters of the curved pipe. The present study supplies a new reference for investigating the nonlinear dynamic response of some other structures.
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| 关 键 词： | 非线性方程 微量元素 空间座标 曲线 微积分 |
Flow-Induced Vibration of A Nonlinearly Restrained Curved Pipe Conveying Fluid |
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| WANG Lin ,NI Qiao and HUANG Yu ying.Flow-Induced Vibration of A Nonlinearly Restrained Curved Pipe Conveying Fluid[J].China Ocean Engineering,2004,18(3):347-356. |
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| Authors: | WANG Lin NI Qiao and HUANG Yu ying |
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| Institution: | WANG Lin 1,NI Qiao and HUANG Yu ying Department of Mechanics,Huazhong Univerisity of Science and Technology,Wuhan 430074,China |
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| Abstract: | Investigated in this study is the flow induced vibration of a nonlinearly restrained curved pipe conveying fluid. The nonlinear equation of motion is derived by equilibrium of forces on microelement of the system under consideration. The spatial coordinate of the system is discretized by DQM (differential quadrature method). On the basis of the boundary conditions, the dynamic equation is solved by the Newton Raphson iteration method. The numerical solutions reveal several complex dynamic motions for the variation of the fluid velocity parameter, such as limit cycle motion, buckling and so on. The result obtained also shows that the sub parameter regions corresponding to the several motions may change with the variation of some parameters of the curved pipe. The present study supplies a new reference for investigating the nonlinear dynamic response of some other structures. |
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| Keywords: | curved pipe conveying fluid flow induced vibration limit cycle motion motion constraint differential quadrature method |
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