一种超聚能装药结构的仿真

为了得到一种新型的可形成较传统射流更高速度的聚能装药结构，利用非线性动力学分析软件AUTODYN-2D对其成型过程进行了数值仿真，并应用应力波基础、冲击力学等相关理论进行分析。研究表明：选用铜、钽、钨作为“蘑菇形”药型罩的材料可以得到速度在8800～13000 m／s且具有良好成型效果的高速射流。分析了药型罩壁厚和下辅助药形罩二的半径结构参数对射流速度的影响，结果表明，减小药型罩厚度或增大下辅助药形罩的半径可以有效提高形成射流的速度，但速度超过13700 m／s后成型效果变差。根据研究成果可以得到“蘑菇形”药型罩各部分材料的搭配规律及其成型规律。

Simulation Research of a Super Shaped Charge Structure

In order to get a new type of shaped charge structure which can form much higher speed of jet than traditional,nonlinear dynamics analysis software AUTODYN-2D numerical simulation was proposed with applied mechanics,mechanical or related theory.Research shows that:copper,tantalum,tungsten as “mushroom”type shaped charge structure materialchoosed can get the speed in 8 800~13 000 m/s and has good forming effect of high speed jet.The effect of radius structure parameters of medicine type shield wall thickness and the sub-auxiliary medicine form cover on the jet speed was analyzed.The simulation analysis prove that reducing the thickness of shaped charge liner or increasing the radius of sub-auxiliary shaped charge liner can effectively improve the speed of forming jet.But if the speed of forming jet has exceeded 13 700 m/s,the shape of forming jet will be bad.Through this study,we can get the“mushroom”liner of different material collocation rules and forming rules.