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Local buckling of honeycomb sandwich plates under action of transverse shear forces. (English) Zbl 0809.73035

Summary: We evaluate the critical transverse shear forces for the local buckling of honeycomb sandwich plates subjected to lateral loads. The evaluation is based on the stress field accounting for the stresses on the microscale in the honeycomb’s hexagonal cells. These microscale stresses are computed by the two-scale method of homogenization theory for periodic media. The elastic restraints resulting from neighboring walls of hexagons are taken into account. The critical shear forces presented here can be used as a design criterion for sandwich plates with honeycomb cores.

MSC:

74G60 Bifurcation and buckling
74K20 Plates
74E30 Composite and mixture properties
74E05 Inhomogeneity in solid mechanics
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