Investigation on Material Response to Ultrahigh Velocity Impact on Ceramics by Micro Particle

The present study attempted to develop a 3D finite element (FE) model on the ultrahigh velocity impact process by micro particle. According to the change of particle kinetic energy before and after the impact, the impact efficiency was analyzed at different machining parameters. The stress distribution of target at different impact angle and impact velocity, various stress distribution of elements near the impact zone were investigated by the developed FE model. The ultrahigh velocity impact on alumina ceramics by micro particle was also examined experimentally. The predicted craters volumes and depths were in accord with experimental results. The developed FE model associated with experiments is an appropriate method to study the ultrahigh velocity impact process and material removal mechanism by micro particle.