摘要:
运用复合法则计算蜂窝板复合材料的等价弹性模量, 并把此值与有限元法的分析数值计算结果进行比较, 指出在运用复合法则计算等价弹性模量时, 由于未考虑到蜂窝芯板与面板间的位移连续性条件, 其误差将很大; 提出了满足蜂窝芯板与面板间的位移连续性条件下的等价弹性模量理论分析的新的计算方法, 并且通过与有限元法的数值分析结果进行比较, 确认其有效性.
Abstract:
In this paper, in-plane equivalent elastic modulus of ahoneycomb sandwich, consisting of hexagonal cell core and face sheet, isstudied by using a theoretical analysis. It is shown that the equivalentelastic modulus can not been analyzed with high precision by treating thehoneycomb as a composite of two materials: the core and the face sheet,because the core consists of portions of the slanting cell walls and thevertical cell walls, whose rigidities differ greatly. Dividing the core intothe slanting cell wall portion and the vertical cell wall portion, andregarding the honeycomb as a composite of three materials, a method tocalculate elastic modulus is proposed based on the principle of the minimumpotential energy, and its validity is verified by numerical results of FEM.
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