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首页> 外文会议>International Conference on Adaptive Structures and Technologies; 20051009-12; Paris(FR) >STATIC AEROELASTIC BEHAVIOR OF A CHIRAL-CORE AIRFOIL
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STATIC AEROELASTIC BEHAVIOR OF A CHIRAL-CORE AIRFOIL

机译：手性芯翼型的静态气动弹性行为

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Extensive research is being devoted to the analysis and application of cellular solids for the design of structural components with superior mechanical properties and multifunctional characteristics. The chiral geometry in particular is an innovative configuration which features an in-plane negative Poisson's ratio which leads to a very high shear modulus, while maintaining some degree of compliance. This unique mechanical behavior can be exploited for the design of sandwich structures with a core composed of a macroscopic chiral truss, laid out across the thickness. This concept, also denoted as "truss-core", is applied for the design of two-dimensional airfoils with both static and dynamic morphing capabilities. A coupled-physics model, comprising simultaneous CFD and elastic analyses, is developed to investigate the influence of the chiral core on the aerodynamic behavior of an airfoil. The model, in particular, predicts the static deflection of the airfoil as a result of given flow conditions. The morphing capabilities of the airfoil, here quantified as camber changes, are evaluated for various design configurations of the core.
机译：广泛的研究致力于细胞固体的分析和应用，以设计具有优异机械性能和多功能特性的结构部件。特别是手性几何结构是一种创新构型，其特征是平面内负泊松比，这导致非常高的剪切模量，同时保持一定程度的顺应性。这种独特的机械性能可用于夹心结构的设计，该结构的芯由宏观的手性桁架组成，并沿整个厚度分布。这个概念，也称为“桁架芯”，被用于具有静态和动态变形能力的二维翼型的设计。建立了同时进行CFD和弹性分析的耦合物理模型，以研究手性核对翼型气动性能的影响。该模型尤其可预测由于给定流动条件而导致的机翼的静态挠度。针对型芯的各种设计配置，评估了翼型的变形能力（此处量化为外倾变化）。

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