改写这段话：In the process of hypervelocity impact the target is under the action of high temperature high pressure and high strain rate1-3 On the macro level shear fracture and spalling will occur And on t

During hypervelocity impact, the target experiences high temperature, pressure, and strain rate, resulting in shear fracture, spalling, grain deformation, fragmentation, and phase transformation. These changes are dependent on the physical and mechanical properties of the projectile and target, as well as the collision conditions. The primary factor that impacts the pressure at the projectile-target interface is the collision speed, projectile-target density, and shock wave speed. The resulting pressure change causes adiabatic heating and subsequent damage to the target, emphasizing the importance of studying the main control parameters of the collision process. By determining the relationship between these parameters and collision pressure, we can derive the pressure equation of typical metal materials during the collision process, allowing for a better understanding of the relationship between failure performance and collision speed of the target plate.