LOW-VELOCITY PERFORATION OF PUNCH-IMPACT-LOADED METAL PLATES

An approximate quasi-static theoretical analysis is presented for the behavior of punch-impact-loaded metal plates. Based on the principle o f virtual work, load-deflection relationships ave first obtained and t hen used to predict the energy-absorbing capabilities of plates subjec ted to low-velocity impacts that cause perforation. It is demonstrated that the theoretical predictions are in good agreement with experimen tal observations on fully clamped steel plates when material strain ra te sensitivity is taken into consideration and provided that perforati on does not occur by adiabatic shear plugging.