The main mechanical properties of honeycomb composite materials are as follows:
1) The bending moment is mainly borne by the panel. The bending moment borne by the panel of the plastic honeycomb sandwich composite material is much larger than the bending moment borne by the core.
2) The stress in the panel is nearly uniformly distributed along the thickness. Since the panel of the plastic honeycomb panel sandwich composite material is very thin, the maximum stress in the panel is very different from the average stress, and the stress in the panel can be considered to be nearly uniformly distributed along the thickness.
3) The transverse shear force is mainly borne by the core. When the honeycomb sandwich panel is loaded, it will generate bending moment and transverse shear force of the vertical plate surface. Because the panel is thin, the transverse shear force that it can bear is not large. The transverse shear force is mainly borne by the core.
4) The transverse shear strain of the core cannot usually be ignored. Due to the small transverse shear elastic modulus of the honeycomb sandwich core, the transverse shear strain cannot be ignored.
5) The core has the function of supporting the panel to avoid instability. The core of the honeycomb sandwich panel will provide lateral support for the thin panel to avoid local instability of the panel.
