Vibration in Turbine Blades: Review of Techniques

Nikhil Dev Garg

Abstract


In the present work a review on the vibrational analysis of turbine blades is present so that different techniques of blade vibration analysis may be compared. The value of natural frequency for any steam and turbine blade increases with the bending mode. At the root, blade is fixed, so the value of natural frequency at the root is low. As it is proceeded from root to tip value of natural frequency increases. From the discussion presented in this work, it can be concluded that the Variational method is a simple method, which yields good vibration characteristics. The results obtained by the Variational approach are found very encouraging and this method can further be applied to more complex vibratory problems. Method of variational makes the base to find the natural frequency of beam vibrating in bending-bending mode. Further it is also observed that the values only for single value of breadth taper and depth taper. Researchers can observe the effect of breadth taper on natural frequency while keeping the depth taper constant. In the similar manner the effect of depth taper on natural frequency while keeping the breadth taper constant can be observed.

Key-words- Vibration, Blade, Natural Frequency, Beam.

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References


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