crushing analysis of metal honeycombs

In-Plane Stiffness of Additively Manufactured Hierarchical ... The transverse elastic modulus decreased by about 45% with more than 5.5% missing cell walls for regular honeycomb, about 75% with 4% missing cell walls for first-order and more than 95% with 4% missing cell walls for second-order hierarchical honeycomb. MODELLING OF IMPACT ON SANDWICH STRUCTUR E FOR . Nomex TM honeycombs with spherical indenters with different radii Fig. 1. Analogy with the buckling of stiffened panels. 3 Analysis of impact on metal-skinned plates. Experiments and numerical studies were carried out on sandwich structures with metal skin and Nomex TM honeycomb. Metal skins damage mode of composite laminated skin. Modelling of low-energy/low-velocity impact on Nomex ... analysis shows that only the cell edge plays an important role from a structural point of view. This reasoning leads to the hypothesis that NomexTM honeycombs under a crushing force behave like a juxtaposition of vertical cell edges and it is possible to model them by a grid of vertical nonlinear springs located at the angles of the hexagons (see Fig. 4).    Read More

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