Verification and Validationfor Numerical Simulation Rules of the Shaped Charge Based on LS-DYNA 3D

Using commercial software LS-DYNA 3D, credibility investigations of the jet formation and penetration simulation rules were carried out to verify BRL-82 standard charge from the conventional shaped charge structure. The result shows that the number of the liner thickness direction is meshed by δ=4, with the key areas mesh size as 0.25 mm, which is occupied by the charge, jet formation and penetration passage. The jet formation and penetration are simulated by multi-material Euler and multi-material fluid-structure interaction analysis, respectively. The simulated results could be of high reliability. The copper liner material constitutive models, i.e., Steinberg or Johnson-Cook, have less impact on the credibility of simulation result. A 56 mm shaped charge apparatus is designed. The result's credibility of jet formation and penetration is well validated by the flash X-ray radiography and static penetration experiments.