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.
|Title of host publication||56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference|
|Publisher||American Institute of Aeronautics and Astronautics Inc.|
|Publication status||Published - 2015|
|Event||56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015 - Kissimmee, United States|
Duration: 5 Jan 2015 → 9 Jan 2015
|Conference||56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015|
|Period||5/01/15 → 9/01/15|