Yang LI, Tong GAO
DOI Number: XXX-YYY-ZZZ
Conference number: HiSST2024-00172
In high-speed vehicles, the all-movable rudder structures are typically subjected to the dual effects of aerodynamic pressure and thermal loads. In this paper, the all-movable rudder structure with lattices and stiffeners is optimized using the thermo-elastic topology optimization method. The main thought of the design method can be summarized as follows: First, the representative lattice units of the selected lattices are equivalent to the virtual homogeneous materials whose effective elastic matrixes are achieved by the energy-based homogenization method. Meanwhile, the stiffeners are modelled using the solid material. Subsequently, the multi-material thermal-elastic topology optimization formulation is established for both the virtual homogeneous materials and solid material to minimize the structural compliance under mass constraint. Thus, the optimal layout of both the lattices and stiffeners could be simultaneously attained by the optimization procedure. Finally, the effectiveness and reliability of the proposed method were verified through the design of a typical all-movable rudder structure.