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Effect of the interval between two shocks on ejecta formation from the grooved aluminum surface

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Defence Technology（防务技术） 2024年第3期33卷 147-159页

作者： Mingyang Xu Jianli Shao Weidong Song enling tang School of Equipment Engineering Shenyang Ligong UniversityShenyang 110159China State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China

This work focuses on the effect of the interval between two shocks on the ejecta formation from the grooved aluminum(Al_(1100))surface by using smoothed particle hydrodynamics numerical *** unsupported shocks are obtained by the plate-impact between sample and two flyers at interval,with a peak pressure of approximately 30 GPa for each *** the shock interval varies from 2.11 to 7.67 times the groove depth,the bubble velocity reduces to a constant,and the micro jetting factor R_(J) from spike to bubble exhibits a non-monotonic change that decreases initially and then *** a shock interval of 3.6 times the groove depth,micro jetting factor R_(J) from spike to bubble reaches its minimum value of approximately ***,the micro jetting factor R_(F) from spike to free surface decreases linearly at first,and stabilizes around 0.25 once the shock interval surpasses 4.18 times the groove *** the shock interval is less than 4.18 times the groove depth,the unloading wave generated by the breakout of the first shock wave is superimpose with the unloading part of the second shock wave to form a large tensile area.

关键词： Ejecta Microjet Two shocks Interval Smoothed particle hydrodynamics

Preliminary Study on Magnetic Induction Intensity Induced by Plasma During Hypervelocity Impact

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Chinese Journal of Aeronautics 2009年第4期22卷 387-392页

作者： tang enling Zhang Qingming Zhang Jian School of Equipment Engineering Shenyang Ligong University Shenyang 110168 China State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology Beijing 100081 China

An experimental system has been built to produce and measure the magnetic field in the backward ejected matter during hypervelocity impact. The designs of measurement system and coil, the choice of associated equipment, and the system calibration are also described in detail. The measurement of magnetic induction intensity for different given coil positions and azimuth angles are performed with two-stage light-gas gun. On condition that impact velocities are approximately equal and incidence angles are 45°, 60° and 90° respectively, the relationship between average magnetic induction intensity and impact angle at different time spans is obtained. Experimental results show that the average magnetic induction intensity with incidence angle of 90° is larger than those with incidence angles of 45°and 60°.

关键词： hypervelocity impact plasma magnetic fields measurement system magnetic induction intensity

Temperature dependence of the mechanical and electrical properties of soft-doped lead zirconate titanate under compression and impact

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Science China(Technological Sciences) 2023年第12期66卷 3562-3573页

作者： WANG RuiZhi WANG ZhiQiang tang enling PENG Hui YANG GuoLai HE LiPing CHEN Chuang HAN YaFei Key Laboratory of Transient Physical Mechanics and Energy Conversion Materials of Liaoning Province Shenyang Ligong UniversityShenyang 110159China School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing 210094China Institute of Fluid Physics China Academy of Engineering PhysicsMianyang 621999China

Compared to a quasistatic environment,the electromechanical response of piezoelectric ceramics exhibits a considerably nonlinear behavior when subjected to *** the effect of ambient temperature is further considered,then the situation becomes more *** thermal,mechanical,and electrical properties of soft-doped piezoelectric ceramics(PZT-5H)under compression and impact conditions were analyzed in the temperature range of-60℃to 200℃(below Curie temperature).The experimental results indicate that the fracture strength of PZT-5H has an extreme value near room *** dynamic piezoelectric coefficient is strongly temperature dependent and has a maximum value near 100℃because of the“electric devil's staircase effect”between polarization and domain switching *** temperature-dependent data will enable the accurate prediction of the dynamic performance of devices by computer simulation.

关键词： PZT impact temperature dependence fracture strength dynamic piezoelectric coefficient

HfZrTiTaNb系高熵合金的冲击反应释能定量确定

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高压物理学报 2024年第1期38卷 102-115页

作者：郭孜涵陈闯涂益良唐恩凌沈阳理工大学辽宁省瞬态物理力学与能量转换材料重点实验室辽宁沈阳110159

作为一种新型含能材料,高熵合金在高速冲击过程中会释放大量能量,具有重要的应用价值。采用二级轻气炮系统加载真空环境下的HfZrTiTaNb系高熵合金弹丸,对轴承钢进行了冲击实验,测量了闪光辐射温度、气体超压、火焰传播速度和容器壁温升... 详细信息

作为一种新型含能材料,高熵合金在高速冲击过程中会释放大量能量,具有重要的应用价值。采用二级轻气炮系统加载真空环境下的HfZrTiTaNb系高熵合金弹丸,对轴承钢进行了冲击实验,测量了闪光辐射温度、气体超压、火焰传播速度和容器壁温升等响应参数的演化过程,分析了高熵合金弹丸撞击靶板过程中的能量流向,定量计算了高熵合金在密闭容器内冲击反应的混合气体焓、闪光辐射能、容器壁的吸收能、喷出气体焓以及撞击靶板产生的变形能,得到了不同元素及其含量对高熵合金释能量的影响。结果表明,高熵合金弹丸冲击反应释放的能量主要被准密闭容器壁吸收。随着Cu或Al含量的增加,HfZrTiTaNb系高熵合金的单位质量释能量增加。在相近的撞击速度下,含Cu高熵合金的单位质量释能量比含Al高熵合金大。

关键词：高熵合金冲击反应释能能量分配单位质量释能量

Macro Meso Response and Stress Wave Propagation Characteristics of MCT High-Voltage Switch Under Shock load

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Bioinspired fish-scale-like magnesium composites strengthened by contextures of continuous titanium fibers:Lessons from nature

Defence technology 2024年第2期

作者： Yuyang Guo Chuang Chen Ruizhi Wang enling tang

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Journal of Magnesium and Alloys 2023年第3期11卷 869-881页

作者： Yanyan Liu Qin Yu Guoqi Tan Mingyang Zhang enling tang Shaogang Wang Zengqian Liu Qiang Wang Zhefeng Zhang Robert O.Ritchie Institute of Metal Research Chinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China Department of Materials Science and Engineering University of California BerkeleyBerkeleyCA 94720USA Key Laboratory of Transient Physical Mechanics and Energy Conversion Materials of Liaoning Province Shenyang Ligong UniversityShenyang 110159China Liaoning Provincial Key Laboratory of Oral Diseases School and Hospital of StomatologyChina Medical UniversityShenyang 110001China

Natural fish scales demonstrate outstanding mechanical efficiency owing to their elaborate architectures and thereby may serve as ideal prototypes for the architectural design of man-made *** bioinspired magnesium composites with fish-scale-like orthogonal plywood and double-Bouligand architectures were developed by pressureless infiltration of a magnesium melt into the woven contextures of continuous titanium *** composites exhibit enhanced strength and work-hardening ability compared to those estimated from a simple mixture of their constituents at ambient to elevated *** particular,the double-Bouligand architecture can effectively deflect cracking paths,alleviate strain localization,and adaptively reorient titanium fibers within the magnesium matrix during the deformation of the composite,representing a successful implementation of the property-optimizing mechanisms in fish *** strength of the composites,specifically the effect of their bioinspired architectures,was interpreted based on the adaptation of classical laminate *** study may offer a feasible approach for developing new bioinspired metal-matrix composites with improved performance and provide theoretical guidance for their architectural designs.

关键词： Magnesium composites Bioinspired materials Fish scales Bouligand-type architecture Structural reorientation

低温下TiZrHf系高熵合金的动态压缩力学特性与点火行为

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有色金属设计 2024年第1期51卷 141-148页

作者：车明月常孟周范飞高陈闯唐恩凌郭凯贺丽萍沈阳理工大学辽宁省瞬态物理力学与能量转换材料重点实验室辽宁沈阳110159

针对高熵合金在低温条件下力学特性以及点火行为研究不足的现状,以含微量元素Cu、Al或Ni的TiZrHf系多主元高熵合金(HEA)为研究对象,结合SHPB试验系统与高速摄像系统,开展不同温度下高熵合金的动态压缩实验及点火特性实验,获得了弹性模... 详细信息

针对高熵合金在低温条件下力学特性以及点火行为研究不足的现状,以含微量元素Cu、Al或Ni的TiZrHf系多主元高熵合金(HEA)为研究对象,结合SHPB试验系统与高速摄像系统,开展不同温度下高熵合金的动态压缩实验及点火特性实验,获得了弹性模量、应力峰值、硬化模量以及应变率与温度、元素种类的关联规律,并明确了元素种类对火焰面积、点火延迟时间、点火对应时刻以及剧烈反应持续时间的影响规律。结果表明,低温条件下3种HEA的应力-应变曲线均经历弹性、强化以及卸载阶段;在相近载荷条件下(~20 m/s,-40℃),含Cu和Ni的2类试件均发生了点火现象,而含Al试件只有细微点火,试件的点火延迟时间均为25μs,含Cu试件的剧烈反应持续时间与点火持续时间均大于含Ni试件。

关键词：高熵合金动态压缩低温条件 SHPB 点火行为

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薄壁管壳高速正撞击穿孔特性的数值研究

航空学报 2015年第12期36卷 3876-3884页

作者：王猛张立佼唐恩凌沈阳理工大学装备工程学院沈阳110159

受径向曲率的影响,薄壁管壳遭受高速弹丸撞击产生的局部穿孔毁伤与薄板结构并不相同。本文利用LS-DYNA3D动力学程序,采用光滑粒子流体动力学和有限元法相耦合的方法（SPH-FEM）,对球形弹丸高速正撞击不同直径薄壁钢管的穿孔毁伤特性进... 详细信息

受径向曲率的影响,薄壁管壳遭受高速弹丸撞击产生的局部穿孔毁伤与薄板结构并不相同。本文利用LS-DYNA3D动力学程序,采用光滑粒子流体动力学和有限元法相耦合的方法（SPH-FEM）,对球形弹丸高速正撞击不同直径薄壁钢管的穿孔毁伤特性进行数值研究。根据小弹丸高速撞击薄板的物理力学性质,可把穿孔过程简化为初始流动扩孔和随后的惯性扩孔两个阶段,提出一种圆柱管壳高速正撞击穿孔的简化物理模型,并分析圆管直径对轴向孔径和径向孔径尺寸差值比的影响。数值模拟结果表明,撞击速度为2~3km/s时,薄壁钢管的正撞击穿孔略呈椭圆状,其轴向孔径尺寸稍大于径向孔径尺寸;随着薄壁钢管直径的增加,两个方向的孔径尺寸差值比减小。另外,薄壁钢管遭受小弹丸撞击穿孔后产生碎片云的分布形态受径向直径影响明显,相同撞击条件时,钢管直径越大,则产生碎片云的膨胀角和残余速度也较大。

关键词：撞击动力学薄壁管壳穿孔碎片云 SPH-FEM

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超高速碰撞闪光强度与碰撞角度关系

强激光与粒子束 2010年第8期22卷 1935-1938页

作者：唐恩凌肖建光沈阳理工大学装备工程学院沈阳110159

为了测量超高速碰撞过程中产生的闪光现象,进而研究相近碰撞速度、不同入射角度(弹道与靶板平面的夹角)条件下超高速碰撞产生闪光在整个物理过程的闪光强度随时间的变化规律,设计了适用于瞬态闪光测量的光学高温计测量系统。通过二级轻... 详细信息

为了测量超高速碰撞过程中产生的闪光现象,进而研究相近碰撞速度、不同入射角度(弹道与靶板平面的夹角)条件下超高速碰撞产生闪光在整个物理过程的闪光强度随时间的变化规律,设计了适用于瞬态闪光测量的光学高温计测量系统。通过二级轻气炮加载LY12球形铝弹丸,运用设计的瞬态高温计测量系统分别进行了入射角度为30°,45°,60°和90°相近碰撞速度条件下碰撞LY12铝靶产生闪光现象的测量。获得了平均碰撞闪光强度峰值与碰撞角度的关系,平均碰撞闪光强度峰值随碰撞角度的减小而增大,碰撞角度为30°时表现更为明显。

关键词：碰撞闪光超高速碰撞高温计 Planck辐射