The novel concept of average minimum moment of inertia (AMMI) is presented and the formula for obtaining AMMI of a cellar array for a thick honeycomb sandwich plate or beam is derived.

• 提出了平均最小横截面惯性矩的概念，并推出了常用蜂窝夹芯板梁的平均最小横截面惯性矩的计算公式，解决了厚蜂窝夹芯板梁胞元阵列惯性矩的计算问题。