Ultra-thin Piezoelectric Lattice for Vibration Suppression in Pipe Conveying Fluid

2020 ◽  
Vol 33 (6) ◽  
pp. 770-780 ◽  
Author(s):  
Xiaofei Lyu ◽  
Fei Chen ◽  
Qingquan Ren ◽  
Ye Tang ◽  
Qian Ding ◽  
...  
Keyword(s):  
Vibration Suppression ◽  
Pipe Conveying Fluid ◽  
Conveying Fluid

Dynamic response and vibration suppression of a cantilevered pipe conveying fluid under periodic excitation

2019 ◽  
Vol 25 (11) ◽  
pp. 1695-1705 ◽  
Author(s):  
Jiantao Li ◽  
Hua Deng ◽  
Wenjun Jiang
Keyword(s):  
Input Signal ◽  
Vibration Suppression ◽  
Feedforward Control ◽  
Structural Vibration ◽  
Pipeline System ◽  
Beam Model ◽  
Pipe Conveying Fluid ◽  
Theoretical Derivation ◽  
Signal Parameters ◽  
Conveying Fluid

A feedforward vibration suppression method is proposed for cantilever pipes conveying fluid. The fluid–structure interaction dynamic equation of the cantilever pipeline system is first established, based on the Euler–Bernoulli beam model. Next, the pulsation function of pipeline pressure is established using the Fourier series, which will serve as the input of the cantilever pipeline system. Then, analysis of transient response is carried out, and the relationship between input signal parameters and the end vibration is studied. Finally, a feedforward control strategy based on optimization of input signal parameters is proposed for minimizing the end vibration. Both theoretical derivation and experimental results in industrial equipment show that the proposed method (i.e., optimization of pressure function parameters) is effective and can suppress the structural vibration of a cantilever pipe conveying fluid.

Stability analysis of a pipe conveying fluid with a nonlinear energy sink

2021 ◽  
Vol 64 (5) ◽  
Author(s):  
Nan Duan ◽  
Sida Lin ◽  
Yuhu Wu ◽  
Xi-Ming Sun ◽  
Chongquan Zhong
Keyword(s):  
Stability Analysis ◽  
Nonlinear Energy Sink ◽  
Pipe Conveying Fluid ◽  
Energy Sink ◽  
Nonlinear Energy ◽  
Conveying Fluid

Hopf-Hopf interactions in a spring-supported pipe conveying fluid

2021 ◽  
Vol 152 ◽  
pp. 107390
Author(s):  
K. Yamashita ◽  
N. Nishiyama ◽  
K. Katsura ◽  
H. Yabuno
Keyword(s):  
Pipe Conveying Fluid ◽  
Conveying Fluid

Nonlinear Analysis of L-shaped Pipe Conveying Fluid with the Aid of Absolute Nodal Coordinate Formulation

2021 ◽  
Author(s):  
K. Zhou ◽  
H.R. Yi ◽  
Huliang Dai ◽  
H Yan ◽  
Z.L. Guo ◽  
...  
Keyword(s):  
Theoretical Model ◽  
Flow Velocity ◽  
Absolute Nodal Coordinate Formulation ◽  
Strong Relationship ◽  
Excitation Amplitude ◽  
Pipe Conveying Fluid ◽  
Base Excitation ◽  
Absolute Nodal Coordinate ◽  
Nonlinear Behaviors ◽  
Conveying Fluid

Abstract By adopting the absolute nodal coordinate formulation, a novel and general nonlinear theoretical model, which can be applied to solve the dynamics of combined straight-curved fluid-conveying pipes with arbitrary initially configurations and any boundary conditions, is developed in the current study. Based on this established model, the nonlinear behaviors of the cantilevered L-shaped pipe conveying fluid with and without base excitations are systematically investigated. Before starting the research, the developed theoretical model is verified by performing three validation examples. Then, with the aid of this model, the static deformations, linear stability, and nonlinear self-excited vibrations of the L-shaped pipe without the base excitation are determined. It is found that the cantilevered L-shaped pipe suffers from the static deformations when the flow velocity is subcritical, and will undergo the limit-cycle motions as the flow velocity exceeds the critical value. Subsequently, the nonlinear forced vibrations of the pipe with a base excitation are explored. It is indicated that the period-n, quasi-periodic and chaotic responses can be detected for the L-shaped pipe, which has a strong relationship with the flow velocity, excitation amplitude and frequency.

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