理论研究被球形头的长杆为 Y p 在一个半无限的目标的穿入上此处介绍 > S,在 Y p 是 penetrator 力量, S 是静电干扰的地方,指向抵抗。为 Y p > S,取决于起始的影响速度,在那里存在穿入的三种类型,也就是由僵硬的长杆的穿入,由使腐蚀的长杆变形的穿入由的非腐蚀的长杆和穿入。如果 penetrator 的影响速度比水动力学速度(V H ) 高,它将在一个腐蚀模式渗透目标;如果影响速度躺在水动力学速度(V H ) 和僵硬身体速度(V R ) 之间,它将在一个可变形的模式渗透目标;如果影响速度是不到僵硬身体速度(V R ) ,它将在一个僵硬模式渗透目标。为在这三个穿入模式之中的转变的批评条件被建议。现在的模型预言以穿入(DOP ) 和批评转变条件的深度与试验性的观察相关很好,这被表明。关键词长杆 - 半无限的目标 - 穿入 - Alekseevskii 鈥揟a te 模型 - 僵硬身体速度 - 水动力学速度工程被中国(10872195 ) 的国家自然科学基础支持。
A theoretical study is presented herein on the pen- etration of a semi-infinite target by a spherical-headed long rod for Yp 〉 S, where Yp is the penetrator strength and S is the static target resistance. For Yp 〉 S, depending upon initial impact velocity, there exist three types of penetration, namely, penetration by a rigid long rod, penetration by a deforming non-erosive long rod and penetration by an erosive long rod. If the impact velocity of the penetrator is higher than the hydrodynamic velocity (VH), it will penetrate the target in an erosive mode; if the impact velocity lies between the hydrodynamic velocity (VH) and the rigid body velocity (VR), it will penetrate the target in a deformable mode; if the impact velocity is less than the rigid body velocity (VR), it will penetrate the target in a rigid mode. The critical conditions for the transition among these three penetration modes are proposed. It is demonstrated that the present model predictions correlate well with the experimental observations in terms of depth of penetration (DOP) and the critical transition conditions.