【摘要】 空心夹层叶片由于同时具备轻量化与吸能特性而被广泛应用于航空发动机设计，研究了四种不同点阵构型对填充式叶片等效模拟件的抗鸟撞能力的影响。通过均匀化方法给出四种点阵构型的等效刚度，然后基于随形自适应点阵填充结构的建模方法建立点阵填充的曲板模型，通过3D打印将单胞填充平板结构制造出来进行鸟撞试验并进行数值仿真。从变形机理和能量吸收的角度分析了四种不同单胞下填充结构的抗鸟撞性能，BCC具有更好的抵抗z方向挠度和面内y方向的褶皱两种变形的表现且相比于其他几种结构的吸能作用更优，所以BCC具有更好的抗鸟撞能力。更多还原

【Abstract】 Hollow sandwich blades are widely used in aircraft engine design due to their having both lightweight and energy absorption characteristics. Here, effects of 4 different lattice configurations on anti-bird impact performance of equivalent simulated specimens of filled blades were investigated. Equivalent stiffnesses of 4 lattice configurations were given with homogenization method, and then lattice-filled curved plate models were established based on the modeling method of shape-following adaptive lattice-filled structure. Single cell-filled flat plate structures were manufactured with 3D printing to do bird impact tests and numerical simulation. From the perspective of deformation mechanism and energy absorption, anti-bird impact performances of 4 different single cell-filled structures were analyzed. It was shown that BCC has better ability to resist deflection in z-direction and in-plane wrinkle in y-direction, and has better energy-absorbing ability compared to other structures, therefore, BCC has better anti-bird impact ability.更多还原