二维码（扫一下试试看！） | | 椭圆截面弹体侵彻混凝土阻力特性研究 | | Study on the Resistance Characteristics of Elliptical Cross-Section Projectile Penetrating Concrete | | 投稿时间：2018-08-28 | | DOI：10.15918/j.tbit1001-0645.2019.02.005 | | 中文关键词:异构型弹体椭圆截面混凝土侵彻阻力特性 | | English Keywords:heterogeneous projectileelliptical cross sectionconcrete penetrationresistance characteristics | | 基金项目:国家自然科学基金资助项目（11390362，11572048）；装备预研领域基金资助项目（61406570101） | | | 摘要点击次数:722 | | 全文下载次数:320 | | 中文摘要: | | 为研究椭圆截面异构型弹体侵彻混凝土过程中的弹体头部受力特性，开展圆形及等截面积不同长短轴之比的椭圆截面弹体侵彻混凝土过程数值模拟计算，对不同弹体侵彻过程中头部表面所受法向应力与法向速度关系进行了分析.获得了不同长短轴之比情况下的椭圆截面弹体头部表面所受法向应力与法向侵彻速度、单元所在位置角度之间的关系表达式，并进一步得到了椭圆截面弹体侵深计算公式.结果表明：与等截面积的圆形截面弹体相比，在相同法向速度情况下，椭圆截面弹体表面所受法向应力大小随着头部表面单元位置到椭圆中心距离的增大而增大；在侵彻速度相同时，弹体侵深随着截面长短轴之比的增大而增大. | | English Summary: | | In order to study the stress characteristics of projectile head during the process of penetrating concrete with elliptical cross-section heterogeneous projectile, numerical simulation of circular and equal cross-sectional area of the elliptical cross-section projectile penetrating concrete process was carried out, and the relationship between the normal stress and the normal velocity on the head surface during the penetration of different projectiles was analyzed. The relationship between the normal stress and the normal penetration velocity of the elliptical cross-section projectile's head surface at different ratios of the major axis to the minor axis and the position of the element was obtained, and the elliptic cross-section body penetration calculation formula was also obtained. The results show that compared with the same cross-sectional area of the circular cross-section projectile, and at the same normal velocity, the normal stress of elliptical cross-section projectile surface increases with the distance from the element of the head to the center of the ellipse. At the same penetration velocity, the penetration depth of the projectile increases with the ratio of the major axis to the minor axis of the cross section. | | 查看全文查看/发表评论下载PDF阅读器 | |
葛红娟,杨光,姜帆,张璐.无平衡电抗器24脉自耦变压整流技术研究[J].北京理工大学学报（自然科学版）,2019,39(2):209~214,220.GEHong-juan,YANGGuang,JIANGFan,ZHANGLu.ResearchonTechnologyofNon-BalancedRe ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21王军,熊庆辉,金毅,张幽彤.电控喷油器压电堆执行器位移波动及其控制技术[J].北京理工大学学报（自然科学版）,2019,39(3):248~254.WANGJun,XIONGQing-hui,JINYi,ZHANGYou-tong.DisplacementWaveletofPiezoelectric ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21葛承垄,朱元昌,邸彦强,孟宪国.面向一类混合退化装备RUL预测的平行仿真技术[J].北京理工大学学报（自然科学版）,2019,39(4):399~405.GECheng-long,ZHUYuan-chang,DIYan-qiang,MENGXian-guo.RULPredictionOriented ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21杨天识,刁培金,梁露露,常震.基于OpenFlow的蜜罐主动取证技术[J].北京理工大学学报（自然科学版）,2019,39(5):545~550.YANGTian-shi,DIAOPei-jin,LIANGlu-lu,CHANGZhen.ActiveForensicsTechnologyofHone ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21肖俊波,杨国来,李洪强,宋杰,邱明,廖振强.一种小口径自动炮复合型减后坐技术研究[J].北京理工大学学报（自然科学版）,2019,39(8):771~776.XIAOJun-bo,YANGGuo-lai,LIHong-qiang,SONGJie,QIUMing,LIAOZhen-qiang.Tech ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21张惠平,余跃,王宏伦.基于自抗扰的高超再入飞行器轨迹线性化控制技术[J].北京理工大学学报（自然科学版）,2019,39(8):852~858.ZHANGHui-ping,YUYue,WANGHong-lun.ResearchonADRC-BasedTrajectoryLinearizationCo ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21杨诗雨,苏丽丽,侯元伟,郝永乐,李伟平.面向漏洞管理的工作流技术应用研究[J].北京理工大学学报（自然科学版）,2019,39(9):967~973.YANGShi-yu,SULi-li,HOUYuan-wei,HAOYong-le,LIWei-ping.ResearchonWorkflowTech ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21郭磊,邢立华,袁倩,葛方俊.干式生化分析仪机载环境力学适应性技术研究[J].北京理工大学学报（自然科学版）,2019,39(10):1045~1050.GUOLei,XINGLi-hua,YUANQian,GEFang-jun.ResearchonMechanicalEnvironmentAdapt ... 北京理工大学科研学术 本站小编 Free考研考试 2021-12-21李维浩,姚世明,李蔚清,苏智勇.面向AR沙盘异地协同标绘的动作重构技术[J].北京理工大学学报（自然科学版）,2019,39(12):1298~1303,1320.LIWei-hao,YAOShi-ming,LIWei-qing,SUZhi-yong.AMotionReconstructionTec ... 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2019年总目次（第39卷）[J].北京理工大学学报（自然科学版）,2019,39(12):1321~1338..[J].TransactionsofBeijingInstituteofTechnology,2019,39(12):1321-1338.二维码（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
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