A turbine blade whole leaf disc natural frequency adjustment structure and method

The present invention pertains to a turbine blisk technology, relates to the natural frequency A turbine blisk blade adjustment structures and methods. Each step of the present invention first an initial blisk blade natural frequency measurements, and based on the measured frequency, the excitation frequency, or in conjunction with the results of the measurement of dynamic stress periodic pulsating air flow is calculated to adjust the frequency of the blade, such that the blades having a natural frequency of resonance safety margin frequency, and then adjust based on the calculated frequencies of the blade, blisk between each blade slot, and the radial depth of the groove is determined according to the requirements to adjust the frequency, and each groove bottom processing hole stopper, was charged in the stopper pin hole. The present invention effectively reduces the natural frequency of the blade, the stiffness of the blade changing, vibration mode and vibration stress distribution, or the blade does not resonate so that resonance vibration mode key to call up the operating speed range, but is easily FM significant effect , easy to control the dimensional accuracy, can meet the actual requirements.