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form tive p s are ed lo hts r m; B material combinations. For example, a metallic foam core is generally combined with a metal face sheet; a composite face is usually coupled with a polymeric foam The purpose of optimal design for weight is to select maps, and draws upon extensive work on sandwich beam strength as reviewed by Zenkert [8]. the beam length between the supports, b the width of the beam, c the core thickness, and tf the face thickness. The relevant material properties for the core are the Young’s ties, and the loading configuration. Four failure modes the core is exceeded, and the peak strength PCS is pre-dicted by PCS 2bðt þ cÞsc: ð1Þ Face yield or microbuckling occurs when the axial stress in the sandwich face attains the yield or microbucklin