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HELP ON BENDING SANDWICH

HELP ON BENDING SANDWICH

HELP ON BENDING SANDWICH

(OP)
I WORK ABOUT SANDWICH COMPOSITES WITH WOVEN SKIN AND TWO DIFFERENT CORES IN THE MIDDLE OF THE STRUCTURE.
______
SKIN  |
______|
CORE1 |
______|
CORE2 |
______|
CORE1 |
______|
SKIN  |
______|

I HAVE FOUND THE EQUATIONS ABOUT A SYSTEM WITH ONLY ONE CORE ON THE CENTER. I DON'T KNOW HOW I CAN APPLY THE EQUATIONS TO MY STRUCTURE. CAN ANYONE HELP ME?

RE: HELP ON BENDING SANDWICH

Have you checked out Witney's text: Structural Analysis of Laminated Anisotropic Plates?

RE: HELP ON BENDING SANDWICH

thank you Qshake for the reply.
i don't have this book... but i have resolved the problem, i have found the equations.
I must consider for the stifness the contributes of all elements... but if the properties of the core are small  i  can negleible that.
one question!
for the stiffness i must consider the skin distance from the neutral axis or the "baricenter"?

for the stress i know that i must consider the distance from the neutral axis.

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