INVESTIGATION OF LOCAL STRAIN FIELDS DURING HIGH-SPEED DEFORMATION

During high-speed deformation inhomogeneities in the local distributio n of plastic strain arise due to the dynamic character of the loading process. The occurrence of these inhomogeneities is studied for the ca se of the high-speed compression test with a ballistic plastometer. Lo cal strain fields are determined experimentally with the method of vis ioplasticity using a fibre composite material and investigated complem entarily by finite element simulations of the entire loading process. (C) 1997 Published by Elsevier Science B.V.