Abstract:
"Isentropic Compression up to 200 KBars for LX 04, Numerical Simulations and Comparison with Experiments"
This paper details the use of isentropic compression experiments and numerical simulations to study the properties of the high explosive LX-04 up to 200 kbars. The primary purpose of the work is to test and validate a new beta version of an electromagnetism module developed for the LS-DYNA software by comparing its predictions to experimental data from Z accelerator shot 1067. This new module is designed for coupled mechanical-thermal-electromagnetic simulations and solves the Maxwell equations using a Finite Element Method (FEM) for the solid conductors and a Boundary Element Method (BEM) for the surrounding vacuum. The 3D numerical models use the experimental current from the Z shot as an input to simulate the compression of LX-04 samples. The simulations successfully predicted the "drive" velocity with good accuracy when compared to the experimental measurements, with calculated pressures reaching about 200 kbars at the base of the panel.
