Optimization design for box of composite wing based on effective stiffness matrix

Zhenjie Tang, Yulong Li

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Based on stiffness matrix, the modulus of composite laminate is translated to the modulus of orthotropic plate and the stiffeners are idealized as beam. In the method of combining multi-island genetic algorithm with sequential quadratic algorithm, the thickness of panels and the area of stiffeners are regarded as design variables and the weight of the box of composite wing as objective function to design the structure of a high aspect-ratio composite wing with multiple variables and constraints. The numerical example shows that the weight of the composite structure is reduced by 9.55% and the optimized time is relatively shorter.

Original languageEnglish
Pages (from-to)521-525
Number of pages5
JournalNanjing Hangkong Hangtian Daxue Xuebao/Journal of Nanjing University of Aeronautics and Astronautics
Volume43
Issue number4
StatePublished - Aug 2011

Keywords

  • Multi-island genetic algorithm
  • Sequential quadratic algorithm
  • Stiffness matrix
  • Structural optimization design

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