THE PLASTIC EUCKLING MECHANISM IN PLATUEA STRESS REGIME OF HONEYCOMB MATERIALS

The platuea stresses of honeycombs and their corresponding deformation mechanisms are analysed under in-plane uniaxial loading condition.It shows that a new deformation mechanism,plastic buckling,may occur when the bending resistability of cell is strong enough.The influences of geometry and material property of cell on the platurs stresses and corresponding deformation mechanisms are discussed for elastic,perfectly plastic materials.