Experiments on viscoplastic response of circular plates to impulsive loading

摘要: Abstract Tests are described of circular plates mild steel and commercially pure titanium loaded impulsively by means explosive sheet. Three loading geometries were used, with magnitudes such that final deflections in the range from one to about seven plate thicknesses produced. Clamping against radial as well transverse at edge was provided. Both materials exhibit strong plastic rate sensitivity. Parameters describing this behavior obtained stress-strain tests low intermediate rates together published data for high strain rates. The measured response times compared predictions mode approximation technique extended large viscoplastic structures.