Applied Mathematics and Mechanics (English Edition) ›› 2017, Vol. 38 ›› Issue (10): 1397-1414.doi: https://doi.org/10.1007/s10483-017-2246-6

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In-plane forced vibration of curved pipe conveying fluid by Green function method

Qianli ZHAO, Zhili SUN   

  1. School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
  • 收稿日期:2016-12-13 修回日期:2017-02-21 出版日期:2017-10-01 发布日期:2017-10-01
  • 通讯作者: Qianli ZHAO E-mail:zql20081841@163.com
  • 基金资助:

    Project supported by the National Science and Technology Major Project (NMP) of China (No. 2013ZX04011-011)

In-plane forced vibration of curved pipe conveying fluid by Green function method

Qianli ZHAO, Zhili SUN   

  1. School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
  • Received:2016-12-13 Revised:2017-02-21 Online:2017-10-01 Published:2017-10-01
  • Contact: Qianli ZHAO E-mail:zql20081841@163.com
  • Supported by:

    Project supported by the National Science and Technology Major Project (NMP) of China (No. 2013ZX04011-011)

摘要:

The Green function method (GFM) is utilized to analyze the in-plane forced vibration of curved pipe conveying fluid, where the randomicity and distribution of the external excitation and the added mass and damping ratio are considered. The Laplace transform is used, and the Green functions with various boundary conditions are obtained subsequently. Numerical calculations are performed to validate the present solutions, and the effects of some key parameters on both tangential and radial displacements are further investigated. The forced vibration problems with linear and nonlinear motion constraints are also discussed briefly. The method can be radiated to study other forms of forced vibration problems related with pipes or more extensive issues.

关键词: variational principle, shallow shell, large displacement, finite element method, in-plane forced vibration, motion constraint, Green function method(GFM), curved pipe conveying fluid

Abstract:

The Green function method (GFM) is utilized to analyze the in-plane forced vibration of curved pipe conveying fluid, where the randomicity and distribution of the external excitation and the added mass and damping ratio are considered. The Laplace transform is used, and the Green functions with various boundary conditions are obtained subsequently. Numerical calculations are performed to validate the present solutions, and the effects of some key parameters on both tangential and radial displacements are further investigated. The forced vibration problems with linear and nonlinear motion constraints are also discussed briefly. The method can be radiated to study other forms of forced vibration problems related with pipes or more extensive issues.

Key words: variational principle, shallow shell, large displacement, finite element method, curved pipe conveying fluid, in-plane forced vibration, Green function method(GFM), motion constraint

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