Experiments on viscoplastic response of circular plates to impulsive loading

Finite viscoplastic deflections of an impulsively loaded plate by the mode approximation technique

“…The present treatment extends that of [4 1 and includes discussion of comparison with recent test results ( 5].…”

“…In tests [ 5 ] on fully clamped plates of mild steel and titanium , explosive loadin g was applied by detonating a disk of explosive sheet (Detasheet ) fixed …”

Analytical modelling of metallic circular plates subjected to impulsive loads

“…8 and 9 show comparisons of the results from the model presented, the experimental ones, and those deduced from the analytical models of Shen and Jones (1993) and Jones (1989), the latter incorporating the viscoplastic behaviour of the material according to the work of Perrone and Badhra (1984). Both Table 1 Properties of the materials used by Bodner and Symonds (1979) figures show dimensionless final permanent displacement at the centre of the plate u max o as a function of the dimensionless impulse given by…”

“…Experimental results are available for this problem (Bodner and Symonds, 1979) which have been used to validate analytical models (Perrone and Badhra, 1984;Shen and Jones, 1993). Bodner and Symonds (1979) used two high strain rate sensitive materials for their experiments: hot rolled mild steel (ASTM.A415) and 99:2% purity titanium (Ti-50A). The geometry parameters of the plates are shown in Table 1, as well as the material properties assuming that both materials behave following the Cowper-Symonds hardening equation…”

“…The value of t load was 10 ls in accordance with the duration of the pulse given by Bodner and Symonds (1979). These authors also measured the final permanent displacement at the plate centre as a function of the applied impulse…”