Analyzed the damping effect of a real engine's platform damper structure of high pressure turbine blade (HPTB) through calculation and experiment

experimental results show that with the increase of positive pressure

damping ratio increase at first

then reduce

and then fluctuate within a certain range

peak of the damping ratio occurs between 100-280N. Calculated positive pressure under the condition of first order bending resonance is 123-158N

damping effect consist with experimental results. Classified the platform damper structures commonly used and compared their advantages and disadvantages.Improved the damper mass about 30% by increased thickness of the damping sheet

when excitation force is 1%

3% and 5% mass of aerodynamic force

a reduction of vibration response is 31%

21% and 16%.