Disk Sorter Ultimate 15.4.16 for mac instal

The viscoelastic model is determined by a retardation time of 5.5Ã-10(-5)s for high oscillation frequencies and a stress relaxation time of 2.0-4.5Ã-10(-7)s for shock wave attenuation. A three-element viscoelastic constitutive model was adopted, in which the relevant parameters were obtained via fitting the damping free oscillations at the beginning of the creep-mode of rheological measurement, and by examining the data of published split Hopkinson pressure bar (SHPB) experiments.

The observed shock wave attenuation indicates the necessity of considering the gelatin×³s viscoelasticity. Non-penetration impact tests of handgun bullets on the 10wt% ballistic gelatin block behind soft armor were carried out in which a high-speed camera recorded the crater×³s movement and pressure sensors imbedded in the gelatin block recorded the pressure waves at different locations.

Viscoelastic shock wave in ballistic gelatin behind soft body armor.īallistic gelatins are widely used as a surrogate of biological tissue in blunt trauma tests.

Disk Sorter Ultimate 15.4.16 for mac instal