Honeycomb core compression checks with nastran results for PCOMP?

[pcomp]

I am analyzing a cowling of sandwich construction (carbon skins and honey comb core). It is idealized in FEA as shell (pcomp) mesh, presuressied by air loads. How should I evaluate the compressive strength of the core for the pressure loads, through the f06 element forces (Fx, FY, Fxy, Mx, My, Mxy, Qx and Qy) from nastran runs?

 

[SWComposites]

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