International Journal of Aeronautical and Space Sciences

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Warping thermal deformation constraint for optimization of a blade stiffened composite panel using GA

  • Todoroki, Akira (Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology) ;
  • Ozawa, Takumi (Graduate student of Tokyo Institute of Technology, Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology)
  • Received : 2013.09.11
  • Accepted : 2013.11.12
  • Published : 2013.12.30
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Abstract

This paper deals with the optimization of blade stiffened composite panels. The main objective of the research is to make response surfaces for the constraints. The response surface for warping thermal deformation was previously made for a fixed dimension composite structure. In this study, the dimensions of the blade stiffener were treated as design variables. This meant that a new response surface technique was required for the constraints. For the response surfaces, the lamination parameters, linear thermal expansions and dimensions of the structures were used as variables. A genetic algorithm was adopted as an optimizer, and an optimal result, which satisfied two constraints, was obtained. As a result, a new response surface was obtained, for predicting warping thermal deformation.

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