TY - GEN
T1 - Robust design method for dynamics of high-speed rotor system with interface
AU - Hong, Jie
AU - Song, Zhihong
AU - Ma, Yanhong
AU - Su, Zhiming
N1 - Publisher Copyright:
© Springer Nature Singapore Pte Ltd. 2021.
PY - 2021
Y1 - 2021
N2 - The advanced aero-engine rotor is composed of different materials and connected by the joints such as bolted structure and spline, which shows discontinuity. The rotor always operates at high speed, and its bending deformation changes the contact status of joint interface, which leads to the stiffness loss and the change of the rotor dynamics. For the high-speed rotor system with interface, taking the spline structure as an example, the bend stiffness loss model is established, and the cause of bend stiffness loss at the joint is explained. On the basis of theory, the stiffness loss correction coefficient is introduced, and the influence of stiffness loss on the critical speed and bearing load are analyzed. In order to optimize the rotor dynamic performance, the robust design methods for modal properties and dynamic response behavior of rotor systems are developed with strain energy distribution on the rotor, aiming to reduce the stiffness loss and the sensitivity of the rotor dynamics. A numerical example is presented, the results show that optimizing the bearing support position and stiffness contributes to the reduction of the strain energy ratio on the joint and the sensitivity of the rotor dynamics, thus optimizing the rotor dynamic performance and its robustness.
AB - The advanced aero-engine rotor is composed of different materials and connected by the joints such as bolted structure and spline, which shows discontinuity. The rotor always operates at high speed, and its bending deformation changes the contact status of joint interface, which leads to the stiffness loss and the change of the rotor dynamics. For the high-speed rotor system with interface, taking the spline structure as an example, the bend stiffness loss model is established, and the cause of bend stiffness loss at the joint is explained. On the basis of theory, the stiffness loss correction coefficient is introduced, and the influence of stiffness loss on the critical speed and bearing load are analyzed. In order to optimize the rotor dynamic performance, the robust design methods for modal properties and dynamic response behavior of rotor systems are developed with strain energy distribution on the rotor, aiming to reduce the stiffness loss and the sensitivity of the rotor dynamics. A numerical example is presented, the results show that optimizing the bearing support position and stiffness contributes to the reduction of the strain energy ratio on the joint and the sensitivity of the rotor dynamics, thus optimizing the rotor dynamic performance and its robustness.
KW - Robust design method
KW - Strain energy distribution
KW - The rotor system
KW - The spline structure stiffness loss
UR - https://www.scopus.com/pages/publications/85104946036
U2 - 10.1007/978-981-15-8049-9_39
DO - 10.1007/978-981-15-8049-9_39
M3 - 会议稿件
AN - SCOPUS:85104946036
SN - 9789811580482
T3 - Lecture Notes in Mechanical Engineering
SP - 629
EP - 645
BT - Proceedings of the 14th International Conference on Vibration Problems - ICOVP 2019
A2 - Sapountzakis, Evangelos J.
A2 - Biswas, Paritosh
A2 - Banerjee, Muralimohan
A2 - Inan, Esin
PB - Springer Science and Business Media Deutschland GmbH
T2 - 14th International Conference on Vibration Problems, ICOVP 2019
Y2 - 1 September 2019 through 4 September 2019
ER -