Hybrid method for studying the effect of the material change on the blade vibration behavior

Document Type: Full Length Article

Authors

1 Professor, Aerospace Department, Amirkabir University of Technology, Tehran, Iran

2 Associate Professor, Mechanical Engineering Department, University of Tabriz, Tabriz, Iran

10.22064/tava.2019.78721.1092

Abstract

To increase the production efficiency of a typical turbine blade, it is necessary to change its material and hence its production technology. In this respect and in order to make sure that new
material will not bring about the blade resonant vibrations, the common practice is to use the Campbell diagram approach. This approach only indicates the potential dangers for blade forced vibration. The purpose of this paper is to demonstrate the efficiency of a proposed hybrid procedure for the development of a reliable Campbell diagram, using an updated finite element
model and a simplified test setup.

Highlights

  • Finite Element Model Updating is used as an identification tool,
  • Experimental Modal analysis of a rotating system performed,
  • Campbell diagram was developed for an industrial Turbine Blade.

Keywords

Main Subjects


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