Volume 27 Issue 12
Dec.  2012
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LIU Wei, CAO Gang, ZHAI Hong-bo, LIU Yong-shou. Sensitivity analysis and dynamic optimization design of supports' positions for engine pipelines[J]. Journal of Aerospace Power, 2012, 27(12): 2756-2762.
Citation: LIU Wei, CAO Gang, ZHAI Hong-bo, LIU Yong-shou. Sensitivity analysis and dynamic optimization design of supports' positions for engine pipelines[J]. Journal of Aerospace Power, 2012, 27(12): 2756-2762.

Sensitivity analysis and dynamic optimization design of supports' positions for engine pipelines

  • Received Date: 2011-12-12
  • Publish Date: 2012-12-28
  • Considering empirical feature and casualness in the design for engine pipelines, the support was simplified as translation-constrained elastic spring element, the lengths between every two supports were defined as supports' positions, and the finite element method (FEM) and the discrete sampling method were applied to the dynamic sensitivity analysis of engine pipeline structure.Compared with other structure parameters, the numerical results demonstrate that some supports' positions play more important roles for complex piping.The effect of supports' amount and stiffness on the fundamental frequency and random vibration responses was discussed.The position optimizations of complex pipelines' supports were implemented to maximize difference between fundamental frequency and external excitation frequency, and minimize the random vibration standard deviation by penalty function method.

     

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