CONSTRUCTION OF ENERGY ABSORPTION CURVES FOR PAPER HONEYCOMB SANDWICH PANELS UNDER DYNAMIC IMPACT

摘要

Traditional energy absorption curves are constructed from stress-strain curves, and yet the dynamic impact tests of cushioning materials for package is no directly stress-strain curves. How to construct the energy curve based on the peak acceleration and static-stress curves is the focus of this paper. According to the free-drop test theory and polynomial fitting, we find the relationship between max energy absorption per unit volume and static stress. The solid modulus of paper honeycombs were considered to standard the energy and stress and construct the energy curves under dynamic impact. The curve can directly characteristic the cushioning properties and load resistance of paper honeycomb sandwich panels.