Efp Simulations with Johnson-cook Models
نویسندگان
چکیده
Because numerical simulations with classical Johnson-Cook formulation of explosively formed projectiles induce non representative projectiles, a modified Johnson-Cook model taking into account the thermally activated and viscous regimes as well as the notion of saturation stress in the 10 s regime has been developed. Using both models, numerical experimental comparisons of Taylor and explosively formed projectiles tests are presented for a nickel and a high strength nickel alloy.
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