Level-set topology optimization is used to design a wing considering skin buckling under static aeroelastic trim loading, as well as dynamic aeroelastic stability (flutter). The level-set function is defined over the entire 3D volume of a transport aircraft wing box. Therefore, the approach is not limited by any predefined structure and can explore novel configurations. The Sequential Linear Programming (SLP) level-set method is used to solve the constrained optimization problems. The proposed method is demonstrated using three problems with mass, linear buckling and flutter objective and/or constraints. A constraint aggregation method is used to handle multiple buckling constraints in the wing skins. A continuous flutter constraint formulation is used to handle difficulties arising from discontinuities in the design space caused by a switching of the critical flutter mode.


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    Title :

    Level-Set Topology Optimization with Aeroelastic Constraints


    Contributors:

    Conference:

    AIAA SciTech 2015 ; 2015 ; Kissimmee, FL, United States


    Publication date :

    2015-01-05


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




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