The Thermal Expansion and Lateral Vibration on Rotor
Yao Xueshi, Zhou Chuanrong
(Nanjing University of Aeronautics and Astronautics, Nanjing 210016)

Abstract: The relations between thermal expansion of a rotor and lateral vibration is analyzed on ANSYS platform by prestress method, and optimization design about the turbine rotor model of a large turbogenerator is made also .
Keywords: thermal expansion, prestress, lateral vibration, critical speeds.