Effects of Orientation, Pressure/Strain Rate, and Microstructure on the Quasi-static Deformation and Shock Response of Single Crystal Explosives

摘要

To further understand deformation within molecular crystals, cyclotrimethylene trinitramine (RDX) single crystals were subjected to quasistatic and dynamic loading. Nanoindentation, plate impact, and molecular dynamics simulations were conducted. A review of the investigations’ results illustrates that hypotheses of simple slip do not correlate with the observed responses, and deformation in RDX is dependent upon orientation, pressure/strain rate, and microstructure. Recently, line- imaging velocimetry and more rigorously controlled crystal growth and thorough characterization have been pursued to identify, control, and map defects from solvent growth and to quantify their effects on deformation responses near the Hugoniot elastic limits.