TY - GEN
T1 - Delamination and Buckling Analysis of a Laminated Component in a High-speed Permanent Magnet Motor
AU - Lin, Lianshan
AU - Barua, Himel
AU - Rallabandi, Vandana
AU - Kumar, Praveen
AU - Ozpineci, Burak
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - High-speed permanent magnet (PM) machines are widely used because of their high-power density and high efficiency. The high rotation speed also inevitably subjects the PMs to high centrifugal load, which might damage them due to their inherent mechanical vulnerability, such as a much lower tensile strength than the compressive strength. To robustly transfer the torque from the magnet to the shaft, the outer diameter of the laminated rotor core is larger than the inner diameter of the rotor frame to ensure tight contact while working at 20,000 rpm. Motor manufacturing requires the shrink-fit method to assemble the rotor frame and rotor core. However, after the shrink-fit assembly, unexpected local delamination and buckling are observed on the rotor core part. Utilizing finite element simulation, we study the internal stress of assembling these two parts at the provided interference. Simulation results indicate the reasons for the delamination and buckling of the rotor core part and provide suggestions for improving the assembly.
AB - High-speed permanent magnet (PM) machines are widely used because of their high-power density and high efficiency. The high rotation speed also inevitably subjects the PMs to high centrifugal load, which might damage them due to their inherent mechanical vulnerability, such as a much lower tensile strength than the compressive strength. To robustly transfer the torque from the magnet to the shaft, the outer diameter of the laminated rotor core is larger than the inner diameter of the rotor frame to ensure tight contact while working at 20,000 rpm. Motor manufacturing requires the shrink-fit method to assemble the rotor frame and rotor core. However, after the shrink-fit assembly, unexpected local delamination and buckling are observed on the rotor core part. Utilizing finite element simulation, we study the internal stress of assembling these two parts at the provided interference. Simulation results indicate the reasons for the delamination and buckling of the rotor core part and provide suggestions for improving the assembly.
KW - buckling
KW - delamination
KW - finite element analysis
KW - high-speed permanent magnet motor
KW - rotor core
UR - http://www.scopus.com/inward/record.url?scp=85200707681&partnerID=8YFLogxK
U2 - 10.1109/ITEC60657.2024.10598849
DO - 10.1109/ITEC60657.2024.10598849
M3 - Conference contribution
AN - SCOPUS:85200707681
T3 - 2024 IEEE Transportation Electrification Conference and Expo, ITEC 2024
BT - 2024 IEEE Transportation Electrification Conference and Expo, ITEC 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2024 IEEE Transportation Electrification Conference and Expo, ITEC 2024
Y2 - 19 June 2024 through 21 June 2024
ER -