mat9 card properties for honeycomb solidcore

[suslu13]

Hi all

I have a honeycomb material properties. I am using CHEXA solid elements

Et=3.5 Mpa Ec=3.5 Mpa Gw=3.9 Mpa Gl= 8.5 Mpa .

I do not have poisson ratio. Is it possible to generate mat9 card from these properties?

I saw some equations like below in Nastran quick reference guide.

G11=(1-Vyz*Vzy)/Ey*Ey*Delta

 

[SWComposites]

I would assume PR = 0. That equation is for a homogeneous material.