An efficient optimal design algorithm is developed to minimize, individually or simultaneously, the total weight of the shaft and the transmitted forces at the bearings. These factors play very important roles in designing a rotor-bearing system under the constraints of critical speeds. The cross-sectional area of the shaft, the bearing stiffness, and the positions of bearings and disks are chosen as the design variables. The dynamic characteristics are determined by applying the generalized polynomial expansion method and the sensitivity analysis is also investigated. For multi-objective optimization, the weighting method (WM), the goal programming method (GPM), and the fuzzy method (FM) are applied. The results show that the present multi-objective optimization algorithm can greatly reduce both the weight of the shaft and the forces at the bearings with critical speed constraints.
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April 1993
Research Papers
Multi-objective Optimization of Rotor-Bearing System With Critical Speed Constraints
T. N. Shiau,
T. N. Shiau
Institute of Aeronautics and Astronautics, National Cheng Kung University, Tainan, Taiwan
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J. R. Chang
J. R. Chang
Institute of Aeronautics and Astronautics, National Cheng Kung University, Tainan, Taiwan
Search for other works by this author on:
T. N. Shiau
Institute of Aeronautics and Astronautics, National Cheng Kung University, Tainan, Taiwan
J. R. Chang
Institute of Aeronautics and Astronautics, National Cheng Kung University, Tainan, Taiwan
J. Eng. Gas Turbines Power. Apr 1993, 115(2): 246-255 (10 pages)
Published Online: April 1, 1993
Article history
Received:
February 20, 1991
Online:
April 24, 2008
Citation
Shiau, T. N., and Chang, J. R. (April 1, 1993). "Multi-objective Optimization of Rotor-Bearing System With Critical Speed Constraints." ASME. J. Eng. Gas Turbines Power. April 1993; 115(2): 246–255. https://doi.org/10.1115/1.2906701
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