| 刚性弹体斜侵彻贯穿混凝土靶的姿态偏转理论模型 |
| |
| 引用本文： | 段卓平,李淑睿,马兆芳,欧卓成,黄风雷. 刚性弹体斜侵彻贯穿混凝土靶的姿态偏转理论模型[J]. 爆炸与冲击, 2019, 39(6): 67-74. DOI: 10.11883/bzycj-2018-0411 |
| |
| 作者姓名： | 段卓平 李淑睿 马兆芳 欧卓成 黄风雷 |
| |
| 作者单位： | 北京理工大学爆炸科学与技术国家重点实验室,北京100081;北京理工大学珠海学院,广东珠海519088 |
| |
| 基金项目： | 国家自然科学基金（11521062） |
| |
| 摘 要： | 为描述刚性弹体斜侵彻贯穿混凝土靶的弹体姿态变化,针对已有贯穿模型存在的问题,在斜侵彻贯穿过程中考虑了弹体转动惯量对姿态偏转的影响,根据弹体贯穿靶板后的成孔特性重新假设了背靶面崩落块形状,并在弹体贯穿出靶的剪切冲塞阶段引入了弹体姿态二次偏转机制,从而建立了刚性弹体斜侵彻贯穿混凝土靶的姿态偏转理论模型,同时给出了混凝土薄靶、中厚靶和厚靶的分类方法。多种侵彻状态的理论模型计算结果均与实验测量结果吻合较好,表明本文理论模型可有效预估弹体斜侵彻贯穿混凝土靶的弹体出靶姿态。
|
| 关 键 词： | 刚性弹体 斜侵彻 贯穿 混凝土靶 姿态偏转 |
| 收稿时间： | 2018-10-22 |
Analytical model for attitude deflection of rigid projectile during oblique perforation of concrete targets |
| |
| DUAN Zhuoping,LI Shurui,MA Zhaofang,OU Zhuocheng,HUANG Fenglei. Analytical model for attitude deflection of rigid projectile during oblique perforation of concrete targets[J]. Explosion and Shock Waves, 2019, 39(6): 67-74. DOI: 10.11883/bzycj-2018-0411 |
| |
| Authors: | DUAN Zhuoping LI Shurui MA Zhaofang OU Zhuocheng HUANG Fenglei |
| |
| Affiliation: | 1.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China2.Beijing institute of Technology, Zhuhai, Zhuhai 519088, Guangdong, China |
| |
| Abstract: | In the present study we developed an analytical model to describe the attitude deflection of the rigid projectile obliquely penetrating into concrete targets. To improve on the previous models, we took the effect of the inertia moment of the projectile into account and assumed anew the shape of the plug formed on the rear surface of the concrete target with regard to the experimental perforation characteristics, and introduced a second attitude deflection mechanism into the shear plugging stage. Moreover, we proposed to classify concrete targets into three types, i.e. thin, medium and thick. The calculated results under different perforation situations accorded well with the experimental data, indicating the validity of our analytical model in predicting the projectile attitude during the oblique perforation of concrete targets. |
| |
| Keywords: | rigid projectile oblique perforation penetration concrete target attitude deflection |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《爆炸与冲击》浏览原始摘要信息 |
|
点击此处可从《爆炸与冲击》下载全文 |
|
