Modeling and Development of Three-Layer Sandwich Composite Materials with Honeycomb Core

Mathematical model of multi-level structure of three-layer sandwich material with honeycomb core based on woven composite are developed. This model allows calculating the effective elastic and the strength characteristics of the material. Model is based on the use of asymptotic homogenization method of hierarchical periodic structures. Samples of numerical finite element computations of honeycomb structures are presented. The manufacture technology of sandwich honeycomb composite material based on glass-fiber clothes, modified vinil-aether binder and glass-fiber-reinforced honeycomb is developed using infusion method. The detailed computer simulation of stress-strain state for panel made of three-layer honeycomb material at four-point bending was performed. It allowed revealing destruction features of such type of constructions due to local shear stresses within working area of power load.

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