中国物理B ›› 2020, Vol. 29 ›› Issue (12): 124301-.doi: 10.1088/1674-1056/abb312

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

  

  • 收稿日期:2020-07-22 修回日期:2020-08-26 接受日期:2020-08-27 出版日期:2020-12-01 发布日期:2020-12-02

Impact vibration properties of locally resonant fluid-conveying pipes

Bing Hu(胡兵), Fu-Lei Zhu(朱付磊), Dian-Long Yu(郁殿龙)†, Jiang-Wei Liu(刘江伟), Zhen-Fang Zhang(张振方), Jie Zhong(钟杰), and Ji-Hong Wen(温激鸿)   

  1. Laboratory of Science and Technology on Integrated Logistics Support, National University of Defense Technology, Changsha 410073, China
  • Received:2020-07-22 Revised:2020-08-26 Accepted:2020-08-27 Online:2020-12-01 Published:2020-12-02
  • Contact: Corresponding author. E-mail: dianlongyu@vip.sina.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11872371) and Major Program of the National Natural Science Foundation of China (Grant Nos. 11991032 and 11991034).

Abstract: Fluid-conveying pipe systems are widely used in various equipments to transport matter and energy. Due to the fluid-structure interaction effect, the fluid acting on the pipe wall is easy to produce strong vibration and noise, which have a serious influence on the safety and concealment of the equipment. Based on the theory of phononic crystals, this paper studies the vibration transfer properties of a locally resonant (LR) pipe under the condition of fluid-structure interaction. The band structure and the vibration transfer properties of a finite periodic pipe are obtained by the transfer matrix method. Further, the different impact excitation and fluid-structure interaction effect on the frequency range of vibration attenuation properties of the LR pipe are mainly considered and calculated by the finite element model. The results show that the existence of a low-frequency vibration bandgap in the LR pipe can effectively suppress the vibration propagation under external impact and fluid impact excitation, and the vibration reduction frequency range is near the bandgap under the fluid-structure interaction effect. Finally, the pipe impact experiment was performed to verify the effective attenuation of the LR structure to the impact excitation, and to validate the finite element model. The research results provide a technical reference for the vibration control of the fluid-conveying pipe systems that need to consider blast load and fluid impact.

Key words: locally resonant pipe, fluid-structure interaction, transfer matrix method, impact vibration properties

中图分类号:  (Structural acoustics and vibration)

  • 43.40.+s
47.35.Lf (Wave-structure interactions) 46.40.-f (Vibrations and mechanical waves) 61.50.Ah (Theory of crystal structure, crystal symmetry; calculations and modeling)