 二维码(扫一下试试看!) | 接触爆炸和近距离爆炸比冲量数值仿真研究 | Investigation of Specific Impulse Under Contact Explosion and Close-in Explosion Conditions Using Numerical Method | 投稿时间:2019-02-16 | DOI:10.15918/j.tbit1001-0645.2019.049 | 中文关键词:比冲量数值仿真接触爆炸近距离爆炸 | English Keywords:specific impulsenumerical simulationcontact explosionclose-in explosion | 基金项目: | | 摘要点击次数:716 | 全文下载次数:316 | 中文摘要: | 对于接触爆炸和近距离爆炸的情况,炸药形状、起爆点位置和产物喷射均会造成载荷空间分布复杂,给理论分析和工程应用带来困难。分别采用流固耦合方法和PBM方法对Nansteel近距离爆炸子弹抛掷实验进行数值仿真,结果表明PBM模型仿真结果和实验结果吻合较好,而流固耦合模型仿真结果仅为实验值的70%左右.对于高度为3~10 cm的等长径比TNT药柱接触爆炸仿真结果表明,中心点比冲量随药柱高度线性变化.对640 g和1 250 g等长径比TNT药柱仿真结果表明,爆心距的变化主要影响靶板中心点6 cm半径内的比冲量,基于量纲分析推导出了比冲量的经验公式. | English Summary: | For contact explosion and close-in explosion, blast load distribution will be effected by the shape of explosive, the location of detonation point and product injection, which poses difficulties to theoretical analysis and engineering application. In order to study the specific impulse generated by contact explosion and close-in explosion, numerical simulations were made using the fluid-solid coupling method and PBM method according to a close-range explosive experiment done by Nansteel. The results showed that the simulation of the PBM model agreed well with the experimental results, while the fluid-solid coupling simulation results were only about 70% of the experimental values. The simulation results of contact explosion of isometric diameter ratio TNT column showed that the center point ’s specific impulse changed linearly with the diameter. The change of the core distance mainly affected the specific impulse within the 6 cm radius of the target center point when 640 g and 1 250 g TNT columns were used. Based on dimensional analysis, the empirical formula of specific impulse was obtained. | 查看全文查看/发表评论下载PDF阅读器 | |
王刚,彭华,唐永旺,靳彦青.Lempel-Ziv-Welch(LZW)压缩数据误码修复技术[J].北京理工大学学报(自然科学版),2020,40(5):562~569.WANGGang,PENGHua,TANGYong-wang,JINYan-qing.ErrorRepairTechnologyof ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21杨啸东,刘检华,马江涛,赵瑛峰,吕乃静.基于混沌粒子群算法的柔性线缆装配序列规划技术[J].北京理工大学学报(自然科学版),2020,40(9):956~962.YANGXiao-dong,LIUJian-hua,MAJiang-tao,ZHAOYing-feng,LüNai-jing.CableA ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21刘刘,姬晓慧,郝自清,曲宏亮,贺体人.数字图像相关技术在多孔气凝胶基复合材料弹性力学常数识别中的应用[J].北京理工大学学报(自然科学版),2020,40(10):1033~1042.LIULiu,JIXiao-hui,HAOZi-qing,QUHong-liang,HETi-ren.Identif ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21倪俊,姜旭,熊周兵,周波.无人车大数据与云控制技术综述[J].北京理工大学学报(自然科学版),2021,41(1):1~8.NIJun,JIANGXu,XIONGZhoubing,ZHOUBo.OverviewofBigDataandCloudControlTechnologiesintheFiel ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21.北京理工大学学报2020年总目次(第40卷)[J].北京理工大学学报(自然科学版),2020,40(12):1369~1386..[J].TransactionsofBeijingInstituteofTechnology,2020,40(12):1369-1386.二维码(扫一下试试看!)北京理 ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21赵瑛峰,刘检华,马江涛,武林林,成勋.面向MCNP程序的三维模型前处理技术研究[J].北京理工大学学报(自然科学版),2021,41(3):237~244.ZHAOYingfeng,LIUJianhua,MAJiangtao,WULinlin,CHENGXun.Studyon3DModelPretr ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21谭博文,段枫,王文广.基于技术风险的方案优化与评估方法的研究[J].北京理工大学学报(自然科学版),2021,41(4):425~431.TANBowen,DUANFeng,WANGWenguang.ResearchonSchemeOptimizationandEvaluationMethodBas ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21袁志扬,朱煜,成荣,张鸣,刘剑,仲凯.高精度平面光栅尺测量系统减振技术研究[J].北京理工大学学报(自然科学版),2021,41(5):494~500.YUANZhiyang,ZHUYu,CHENGRong,ZHANGMing,LIUJian,ZHONGKai.ResearchonVibration ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21徐豫新,蔡子雷,吴巍,赵鹏铎,乔治军.弹药毁伤效能评估技术研究现状与发展趋势[J].北京理工大学学报(自然科学版),2021,41(6):569~578.XUYuxin,CAIZilei,WUWei,ZHAOPengduo,QIAOZhijun.CurrentResearchandDevelopme ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21王建中,游玉,王鹤.变结构陆空机器人自主跨域越障技术研究[J].北京理工大学学报(自然科学版),2021,41(8):840~846.WANGJianzhong,YOUYu,WANGHe.AutonomousCross-DomainObstacleNegotiationResearchofaVari ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21
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