Honeycomb elastic properties: a review of some existing theories and a new dynamic approach

The influence of the nine orthotropic material properties of honeycomb on the dynamic response of a finite element model of a simple supported sandwich plate are examined. Fifteen available theories from the literature for the material properties of honeycomb are reviewed and their values calculated for a HexWeb 5.2-1/4-25(3003) Aluminium core. The agreement between the theoretical material properties and the major ASTM(American Society for Testing andMaterials) standard test methods is investigated. A new and simple technique is described for measuring the dynamic shear moduli of honeycomb materials and its values are compared with those presented in the literature