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以非定常状态逼近定常状态建立的模型──考虑强度效应的二维柏努里方程作为杆式弹和射流侵彻效应的简易分析模型的基础，模型中所有的系数对两种侵彻体通用。本模型的一般的方程式基本上和杆式弹或射流侵彻的分析公式类似。本模型有意义的改进是：（１）作为逼真地描述空穴作用在微元射流或分段杆侵彻时所起作用的一种工具；（２）作为研究靶元界面包括自由表面的一种工具；（３）对装药和药形罩的缺陷以及对射流、偏转、阻尼和射流元、分段杆的发散作了解释。作为一个子程序，本模型包括了文献１所描述的靶元为陶瓷材料时的模型。
The model established by the unsteady state approximation to a stationary state ─ ─ The two-dimensional Bernoulli equation considering the intensity effect serves as the basis for a simple analytical model of the rod projectile and jet penetration effects where all the coefficients are common to both types of penetration . The general equation for this model is basically similar to the analytical formula for rod or jet penetration. The interesting improvements of this model are: (1) as a tool to describe the role of cavitation in the penetration of a jet or a segmented rod lifelike; (2) as a tool to study the interface of a target including a free surface (3) Explain the shortcomings of the charge and domes, as well as the divergence of jets, deflections, dampes, and jet elements and segmented rods. As a subroutine, this model includes the model described in Document 1 when the target is a ceramic material.