Numerical Study on Vibration Response of Compressor Stator Blade Considering Contact Friction of Holding Ring

There are many kinds of assembly structures in heavy-duty gas turbine compressor stator blades which have significant influence on the complex damping vibration characteristics. At present, design is becoming more and compact, so it very meaningful to accurately obtain blade characteristics with contact damping. Firstly, a fretting slip friction dynamic model was introduced, then analysis outer ring structure established based theory. Then, response obtained according various working conditions, main factors affecting were revealed. Finally, under particular exciting force condition simulated. The results show that affected by excitation normal load surface. curve equivalent stiffness coefficient surface analyzed, motion changed change condition. can simulate nonlinear blades. This method provides reference for safety