Paper Title:
Modal Analysis of High Power Variable Speed Hydrodynamic Coupling Impellers
  Abstract

In view of the complex vibration characteristics of hydrodynamic coupling, dynamic analysis of hydrodynamic coupling is carried out by finite element method (FEM), and modal characteristics of pump and turbine which are the most important parts of it are calculated. Modal vibration analysis data of pump and turbine could be obtained by ANSYS software and the natural frequencies of it within different rotational speed is calculated. The result shows that the natural frequencies of pump and turbine are increasing along with enhance of the rotating speed, and it illustrates that rotating centrifugal force could be reinforced natural frequencies of the structure. According to the relationship between exciting force and rotating speed,the critical speeds of pump and turbine are calculated. And the stability operating condition of hydrodynamic coupling must be avoided in each order critical speed of pump and turbine. The research work provides an effective method to analyze the vibration of hydrodynamic coupling. It is suitable for further dynamic analysis and structure optimum design to reduce the vibration of Hydrodynamic coupling.

  Info
Periodical
Chapter
Chapter 2: Materials Science in Computer-Aided Manufacturing and Design
Edited by
Wensong Hu
Pages
236-240
DOI
10.4028/www.scientific.net/AMR.346.236
Citation
R. Zhang, W. X. Ma, X. Q. Lu, "Modal Analysis of High Power Variable Speed Hydrodynamic Coupling Impellers", Advanced Materials Research, Vol. 346, pp. 236-240, 2012
Online since
September 2011
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Price
$32.00
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