Analysis and tailoring design of stiffness-center of a high-ratio-aspect composite wing

Yongpeng Dong, Shihui Huo, Lin Hua, Fusheng Wang, Zhufeng Yue

Research output: Contribution to journalArticlepeer-review

Abstract

A simple method was presented by means of FE software to fix on the location of stiffness-center axis of a high-ratio-aspect composite wing model. The most difference was 7.5%, comparing the results of FE method with that of theoretical method. It was applied to an example of engineering. The optimal design was carried out with the location of stiffness-center axis of a composite wing as objective function and static strength and stability as constraints. The design variables were the lay-up thickness of panel and spar web, and the cross-section area of stringer and spar edge. Through the iterative calculation by multi-island genetic algorithm and sequential quadratic programming, the optimized location of stiffness-center axis of composite wing model was obtained finally. Compared with that optimized before, the location of stiffness-center axis is closer to leading edge of the wing.

Original languageEnglish
Pages (from-to)52-55
Number of pages4
JournalZhongguo Jixie Gongcheng/China Mechanical Engineering
Volume24
Issue number1
DOIs
StatePublished - 10 Jan 2013

Keywords

  • Finite element(FE) method
  • Multi-island genetic algorithm
  • Optimization design
  • Sequential quadratic programming
  • Stiffness center axis

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