[1]汤 俊,葛建立,闫 彬,等.弹丸侵彻闭孔泡沫铝冲击波形数值模拟[J].南京理工大学学报(自然科学版),2016,40(03):328.[doi:10.14177/j.cnki.32-1397n.2016.40.03.013]
 Tang Jun,Ge Jianli,Yan Bin,et al.Numerical simulation on shock waves of projectile penetrating closed-cell foam aluminum[J].Journal of Nanjing University of Science and Technology,2016,40(03):328.[doi:10.14177/j.cnki.32-1397n.2016.40.03.013]
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弹丸侵彻闭孔泡沫铝冲击波形数值模拟
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
40卷
期数:
2016年03期
页码:
328
栏目:
出版日期:
2016-06-30

文章信息/Info

Title:
Numerical simulation on shock waves of projectile penetrating closed-cell foam aluminum
文章编号:
1005-9830(2016)03-0328-06
作者:
汤 俊1葛建立1闫 彬2杨国来1李 振1
1.南京理工大学 机械工程学院,江苏 南京 210094; 2.西北机电工程研究所,陕西 咸阳 712099
Author(s):
Tang Jun1Ge Jianli1Yan Bin2Yang Guolai1Li Zhen1
1.School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China; 2.Northwest Institute of Mechanical and Electrical Engineering,Xianyang 712099,China
关键词:
弹丸 闭孔泡沫铝 冲击波形 动态非线性有限元模型 峰值 脉宽 孔隙率 弹丸质量
Keywords:
projectiles closed-cell aluminum foams shock waves nonlinear dynamics finite element models peak values pulse width porosity projectile mass
分类号:
O39
DOI:
10.14177/j.cnki.32-1397n.2016.40.03.013
摘要:
为分析弹丸结构参数及闭孔泡沫铝材料参数对冲击加速度响应的影响,建立了弹丸侵彻闭孔泡沫铝试验装置的动态非线性有限元模型。利用LS-DYNA软件模拟了弹丸冲击侵彻闭孔泡沫铝的波形发生过程。通过数值计算研究参数对冲击响应的影响,特别是对冲击过程中弹丸加速度峰值、脉宽及加速度波形的影响。研究发现,使用锥形头弹丸可获得较为平整的加速度波形; 降低泡沫铝孔隙率、减小厚度、减小弹丸质量均会引起弹丸冲击加速度峰值的增大与冲击脉宽的减小; 增大弹丸初速可提高冲击加速度峰值与脉宽。
Abstract:
To analyze the acceleration responses of projectiles under various projectile structures or closed-cell foam aluminum material parameters,a nonlinear dynamics finite element model of a projectile impacting closed-cell foam aluminum is established.The waveform of a projectile impacting closed-cell foam aluminum is simulated by LS-DYNA software.The influences of different parameters on impulse response are researched by a numerical method.The trend,peak value and pulse width of the acceleration curves under different conditions are studied respectively.The results show that a smooth acceleration waveform can be obtained by using conical projectiles.The peak acceleration increases and the pulse width reduces under such conditions as lower porosity,thinner target and smaller mass of the projectile.High initial speed of the projectile can increase the peak value and the pulse width of the acceleration.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-10-30 修回日期:2016-01-19
基金项目:国家自然科学基金(11172139; 11572158); 国家重大科学仪器设备开发专项(2013YQ47076508); 中央高校基本科研业务费专项资金(30915118825)
作者简介:汤俊(1991-)男,硕士,主要研究方向:非线性有限元,E-mail:513101001221@njust.edu.cn; 通讯作者:葛建立(1980-),男,博士,副教授,主要研究方向:非线性有限元、虚拟样机技术、等几何分析,E-mail:gejianli@njust.edu.cn。
引文格式:汤俊,葛建立,闫彬,等.弹丸侵彻闭孔泡沫铝冲击波形数值模拟[J].南京理工大学学报,2016,40(3):328-333.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2016-06-30