Thumb rule for honeycomb,corrugated structures.

[kdaenerys]

What is a thumb rule for equivalent yield strength (improvement or reduction) for perforated, honeycomb and corrugated structures as compared to solid structures? Is there a thumb rule for light weighting for a similar case?
The parameters for thumb rule could be weight being reduced/increased, strength, cost, complexity in manufacturing/design/analysis etc.

 

[JStephen]

There is an "Aeronautic Engineering Other Topics" subforum, and you may find more answers there.