密排圆形胞元蜂窝面内等效弹性参数的模拟仿真

利用有限元数值模拟技术建立了密排圆形胞元蜂窝夹芯结构面内等效弹性参数的模拟模型，提出了一种求解该结构面内力学性能参数的分析方法，解决了密排圆形胞元蜂窝夹芯结构几何建模中存在无理数的问题，通过用验证的3D有限元模型和分析方法对不同几何结构尺寸和材质的蜂窝夹芯面内等效弹性参数的模拟研究，获得了密排圆形胞元蜂窝夹芯结构面内等效刚度和Poission比随蜂窝夹芯几何参数变化关系，并给出了等效参数的计算分析公式，为密排圆形胞元蜂窝夹芯复合材料结构理论研究奠定了基础。

Simulation of the In-plane Equivalent Elastic Parameters for Closely Arranged Circular Cell Honeycomb

The analytic model of the equivalent elastic parameters for a closely arranged circular cell hon-eycomb is built by using the finite element numerical simulation technology. The modeling problem in geo-metric structure with irrational number has been solved with the analysis of mechanical property for the closely arranged circular cell honeycomb. The 3D finite element model has been set up and the equivalent elastic parameters of the closely arranged circular cell honeycomb with different physical dimensions have been successfully simulated by employing the verified model and method presented by this paper. The for-mulae that can calculate equivalent elastic parameters have been provided. The conclusions will provide a foundation for the theoretical research of the honeycomb sandwich composite with the closely arranged cir-cular cell core.