期刊
STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
卷 27, 期 1-2, 页码 27-42出版社
SPRINGER-VERLAG
DOI: 10.1007/s00158-003-0362-z
关键词
topology optimization; aeroelasticity; fluid-structure interaction; Sequential Augmented Lagrangian method; coupled adjoint sensitivity analysis
A topology optimization methodology is presented for the conceptual design of aeroelastic structures accounting for the fluid-structure interaction. The geometrical layout of the internal structure, such as the layout of stiffeners in a wing, is optimized by material topology optimization. The topology of the wet surface, that is, the fluid-structure interface, is not varied. The key components of the proposed methodology are a Sequential Augmented Lagrangian method for solving the resulting large-scale parameter optimization problem, a staggered procedure for computing the steady-state solution of the underlying nonlinear aeroelastic analysis problem, and an analytical adjoint method for evaluating the coupled aeroelastic sensitivities. The fluid-structure interaction problem is modeled by a three-field formulation that couples the structural displacements, the flow field, and the motion of the fluid mesh. The structural response is simulated by a three-dimensional finite element method, and the aerodynamic loads are predicted by a three-dimensional finite volume discretization of a nonlinear Euler flow. The proposed methodology is illustrated by the conceptual design of wing structures. The optimization results show the significant influence of the design dependency of the loads on the optimal layout of flexible structures when compared with results that assume a constant aerodynamic load.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据