RESPONSE OF AN INFINITE-PLATE ON A HONEYCOMB FOUNDATION TO A RIGID CYLINDRICAL IMPACTOR

The response of a thin infinite plate on a honeycomb foundation to imp act by a rigid cylindrical projectile is investigated by continuum mec hanics. The influence of the honeycomb mass accumulating at the front plate is included in the analysis. The plate is assumed to be rigid-pe rfectly-plastic and to obey the Hodge yield condition and associated f low rule. The honeycomb is modeled as a continuum with discontinuous d ensity. The effects of finite deformation and membrane forces, in addi tion to transverse shear forces and bending moments are considered in the present formulation. Excellent correlation of the predicted result s with corresponding experimental data is observed. The effect of the crushed honeycomb mass is shown to be negligible.