Numerical analysis of single particle impact in the context of Cold Spray: a new adhesion model

摘要: A new adhesion model for numerical simulation of single particle impact in the context Cold Spray is introduced. As other studies, cohesive forces are put between and substrate to account adhesion. In this study however, only when a local physical criterion met. The phenomenon most often attributed shear stress instability. Johnson-Cook material law used with damage softening enable strong localization at interface without need an extremely fine mesh. This then detected as drop yield value by algorithm, which implements force. evolution force defined energy dissipative model, using surface parameter. Each link broken once all its associated dissipated. on also break bond prematurely, effect erosion higher speeds. found reproduce Spray-like behavior observed critical maximum