Optimization Design of Rotor Dynamic Characteristics of Helium Turbine
Based on ANSYS,the rotor dynamic characteristics of a flexible helium turbine rotor are calculated,analyzed and optimized.Firstly,the critical speed of the initial model of the rotor is calculated to identify key parts affecting its natural frequency.The bending stiffness is then enhangced to increase the critical speed of the rotor.Next,the rotor is segmented and connected by a flexible diaphragm coupling.Calculation results show that this increases its critical speed,which makesthe rotor a rigid shaft at the design speed and ensures the rotor dynamic safety.
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