Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (11): 1592-1596.DOI: 10.12068/j.issn.1005-3026.2014.11.017

• Resources & Civil Engineering • Previous Articles     Next Articles

Reliability Robust Optimization Design for Complex Rotor System Under Resonance Failure

ZHU Lisha1, ZHANG Yimin1, WANG Changyi2   

  1. 1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 2. Shenyang Machine Tool Co., Ltd., Shenyang 110141, China.
  • Received:2014-01-28 Revised:2014-01-28 Online:2014-11-15 Published:2014-07-03
  • Contact: ZHU Lisha
  • About author:-
  • Supported by:
    -

Abstract: According to the determinate criterion for the failure of a large complex rotor system, a reliability model based on the resonance failure was proposed and the reliability robust optimization design parameters for the rotor system could be accurately obtained. Firstly, based on the rotor dynamic theory the weakest link was identified, and the real isolative margin and allowable isolative margin were assessed. The resonance reliability model for rotor system judged by the criterion that the real isolative margin could be more than the allowable one. Then using the neural network technology, reliability design theory and modified reliability sensitivity design theory, the influence degree of original random parameters on reliability was computed out and found out which parameter has a high influence degree. Finally, reliability robust optimization design theory for system was studied to reduce sensitivity of random parameters to reliability on the basis of ensuring a certain reliability.

Key words: reliability, rotor, resonance, robust, isolative margin

CLC Number: