活性材料侵彻体高过载条件下安全性分析
Safety analysis of reactive material penetrator under high overload conditions
谭波 1谭晟 1芦永进 1杨世玺1
作者信息
- 1. 海军工程大学兵器工程学院,武汉 430033
- 折叠
摘要
为研究超高速发射条件下力学过载环境对活性侵彻体的作用特性,构建了侵彻体一维应力波传播模型,在活性材料PTFE和Al的质量分数比为73.5％:26.5％、施加加速度过载33 000g、持续时间10 ms的条件下,得到了活性内芯所受最大应力为62.56 MPa.基于LS-DNYA仿真软件,构建了侵彻体模型,并对其进行验模,仿真结果显示,出口速度达到2 474.5 m/s,活性内芯在发射中的最大应力为59.35 MPa,理论和仿真误差为5.12％,未达到活性材料反应阈值压力.结果表明:在超高速过载环境下,该活性材料的配比方案满足超高速条件下的安全性要求.
Abstract
In order to study the action characteristics of mechanical overload environment on reactive penetrator under ultra-high-speed launching conditions,the one-dimensional stress wave propagation model of the penetrator was constructed under the condition that the mass fraction ratio of the reactive material PTFE and Al was 73.5％:26.5％,while the acceleration overload was applied to 33 000g with the duration of 10 ms,and the maximum stress of the reactive core obtained was 62.56 MPa.Based on the LS-DNYA simulation software,the penetrator model was constructed and tested.The simulation showes that the outlet velocity reaches 2 474.5 m/s,the maximum stress of the reactive core in the launch is 59.35 MPa,and the theoretical and simulation error is 5.12％,which does not reach the threshold pressure of the reactive material reaction.The results show that the reactive mate-rial ratio scheme meets the safety requirements under ultra-high speed overload environment.
关键词
活性材料/高过载/安全性/LS-DNYA/力学过载Key words
reactive material/high overload/safety/LS-DNYA/mechanical overload引用本文复制引用
基金项目
海军工程大学自主立项基金资助项目(2022507150)
出版年
2024
NETL
NSTL
万方数据