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Analysis of the Strength on the Rotor Punching Sheet of Nuclear Reactor Cooling Medium Driving Motor

GE Bao-jun;ZHANG Wei;School of Electrical and Electronic Engineering,Harbin University of Science and Technology;  
A strong stress is withstood by the rotor punching sheet during the running of nuclear reactor cooling medium driving motor.In order to study the strength on the rotor punching sheet and the influential factor of its stress,the rotor of driving motor was the research object,the three-dimensional rotor model of driving motor is established by the finite element method to obtain the Mises equivalent stress nephogram and check the rotor's strength with setting parameters and constraints.According to different rotor speeds,the different average temperatures of rotor punching sheet and shaft and the different static magnitude of interference between rotor punching sheet and shaft,the research about how the contact pressure of matching surface between rotor punching sheet and shaft and the Mises equivalent stress are impacted is carried on.The results show that the maximum Mises equivalent stress value of rotor punching sheet emerges on the axial vents,the stress value is beyond the tensile limit of the materialand.The greater the static magnitude of interference and the smaller temperature difference of rotor punching sheet and shaft lead to the greater interface compressive stress of rotor punching sheet and shaft and the greater maximum Mises equivalent stress value of rotor punching sheet.The higher the rotor speedlead to the smaller interface compressive stress of rotor punching sheet and shaft and the greater maximum Mises equivalent stress value of rotor punching sheet.
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