Volume 26 Issue 9
Sep.  2011
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HU Qing-hua, DENG Si-er, TENG Hong-fei. Optimization of rotor-bearing system with nonlinear dynamics considering internal clearance[J]. Journal of Aerospace Power, 2011, 26(9): 2154-2160.
Citation: HU Qing-hua, DENG Si-er, TENG Hong-fei. Optimization of rotor-bearing system with nonlinear dynamics considering internal clearance[J]. Journal of Aerospace Power, 2011, 26(9): 2154-2160.

Optimization of rotor-bearing system with nonlinear dynamics considering internal clearance

  • Received Date: 2010-09-04
  • Rev Recd Date: 2010-12-05
  • Publish Date: 2011-09-28
  • In view of existing problems in optimization of a rotor-bearing system with dynamic performance constraints, the following improvements were made. Firstly, influence of clearance was considered in the optimization model. Secondly, a hybrid algorithm based on evolutionary algorithm/line search method was proposed. In the proposed algorithm, there were two optimization processes, global searching process using evolutionary algorithm to obtain an optimal solution and local searching starting with the optimal solution by line search method. Numerical results show that: the clearance has great influence on optimization results. The proposed algorithm overcomes the difficulty in choosing initial value for line search method, with higher success rate under the same calculation accuracy.

     

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