Research on the Propagation Process of One-dimensional Stress Wave inside the Projectile

摘要

Taking aim at the phenomenon that the propagation process of one-dimensional stress wave in projectile will be exposed to reflection and transmission on the interface between mediums, based on wave impedance and limit yield of the different mediums inside some type projectile, using calculation and graphic method, analyses onedimensional stress wave propagation in different mediums, educe ultimate loading action on projectileloaded equipment. At present, the information-based cannonball of howitzer firing always uses the cannon carried falling ammunition to complete special operational mission. This type of cannonball mostly takes the back-ejection mode to cast the projectile-loaded equipment. The distribution of projectile-loaded equipment inside projectile is along the axial direction, the material of the components inside projectile is different from each other. So that the one-dimensional stress wave propagation of the bottom of projectile will produce the reflection and transmission on the different medium interface, and the loads between the projectile-loaded equipment and the bottom of projectile are different. So based on wave impedance and limit yield of the different mediums, analyses the reflection and transmission of one-dimensional stress in different mediums, study the propagation process of one-dimensional stress wave inside the projectile.