冲击载荷作用下弹体动态响应试验研究

Experimental study on dynamic response of projectile under impact loading

以量纲理论推导了弹体应变响应的数学理论模型,基于落锤冲击试验弹体的应变数据,拟合得到了侧向和头部撞击作用下弹体的破裂应变函数,得到了弹体遭受冲击载荷作用下壳体的临界破裂条件。侧向撞击时弹体临界应变阈值为0.0058,头部撞击时弹体临界应变阈值为0.075。结果表明,该方法能够为弹体结构设计和壳体破裂条件研究提供数据支持,可为相似工程应用提供参考依据。

In order to investigate the condition of shell rupture under impact load,the mathematical model of projectile strain response is deduced by dimension theory.Based on the strain data in test,the fracture strain function of projectile under lateral and head impact is fitted and the critical fracture condition of projectile is further obtained,showing the critical strain threshold is 0.0058 under lateral impact and 0.075 under head impact.The results indicate that the method can provide data support for the design of projectile structure as well as the study of projectile fracture condition,and can also provide reference for similar engineering applications.