Modeling Explosive Cladding of Metallic Liners to Gun Tubes

摘要

A computational investigation of explosive cladding of refractory metal based materials was conducted in support of the Full Combat Systems Durable Gun Barrels Manufacturing Technology Objective (MTO) and Chromium Elimination Strategic Environmental Research and Development programs. The objective of the effort was to develop and demonstrate physics based modeling for explosive barrel cladding process design and optimization. The effort was focused on cladding modeling development, cladding process design, and optimization. The effort applied high rate continuum modeling to physically model the process of barrel liner cladding. High explosive equations of state were being developed for the unique low density, low detonation velocity explosives used in the cladding process. A multi-scale dynamics approach was taken to address macro-scale liner cladding, as well as micro-scale clad welding dynamics. Process modeling included computational investigation of momentum trap geometries to avoid gun deformation during the cladding process.