Modal Analysis of a Second Stage Blade in a Gas Turbine and Comparison with Experimental Results

Document Type : Original Article

Authors

• Abdollah Asadolahi Ghohieh
• Mohammad Hadi Sayyadnezhad

10.22067/fum-mech.v22i2.10615

Abstract

In this research, modal analysis of a second stage blade in a gas turbine is investigated and vibration modes of blade are found in various conditions. The numerical calculation by finite element method using NASTRAN-PATRAN software based on experimental test conditions is utilized and there is a good agreement between the experimental and FEM results. Finally by calculating excitation frequency in gas turbine work conditions and using a Campbell diagram, it is concluded that there is not any resonant problems in the blade and there is a good agreement between the experimental and FEM results as well.

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