STRAIN CORRELATION AT DIFFERENT STRUCTURAL LEVELS FOR DYNAMICALLY LOADED HOLLOW COPPER CYLINDERS

A quantitative correlation between continual values of strains and microstrains have been determined. The plastic flow instability in copper developed into the system of cracks, has been revealed. At high rate strain a succession of engagement of structural strain levels has been shown to be dependent on the size of grain in an initial structure and to be determined by the relation between the values of mean strain rate at a continual level and the rate of internal stress accomodation due to rotational modes.