|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 长杆高速侵彻问题研究进展显示文摘由高密度金属制成的长杆弹在1.5~3.0 km/s的高速下具有很强的侵彻和贯穿能力,长杆高速侵彻问题现已成为穿甲侵彻领域的研究热点.本文综述了长杆高速侵彻问题的最新研究进展,首先介绍了长杆高速侵彻的基本概念、研究方法和理论模型;其次重点论述了研究中关注的突出问题与应用,包括弹靶材料性质、长杆弹头部形状、长径比效应与分段杆设计、陶瓷靶抵抗长杆侵彻与界面击溃和非理想长杆侵彻;最后对未来的研究工作提出一些建议. | 焦文俊 陈小伟 | 2019 | 力学进展2019，49，1： | 19 |
| 2 | 超高速碰撞产生的碎片云研究进展显示文摘弹丸超高速撞击薄板后破碎形成碎片云,被应用于空间碎片防护设计。针对薄板超高速正撞击情况下产生的碎片云进行分析,梳理了主要研究进展及不足,按碎片云形成过程、碎片云分布特性、碎片云模型和碎片云侵彻性能4个部分进行了阐述。综合评述了近30年碎片云研究的进展,提出了未来研究发展趋势和若干建议,以供相关领域研究者参考。 | 邸德宁 陈小伟 文肯 张春波 | 2018 | 兵工学报2018，39，10： | 14 |
| 3 | Research and development on hypervelocity impact protection using Whipple shield:An overview显示文摘Whipple shield,a dual-wall system,as well as its improved structures,is widely applied to defend the hypervelocity impact of space debris(projectile).This paper reviews the studies about the mechanism and process of protection against hypervelocity impacts using Whipple shield.Ground-based experiment and numerical simulation for hypervelocity impact and protection are introduced briefly.Three steps of the Whipple shield protection are discussed in order,including the interaction between the projectile and bumper,the movement and diffusion of the debris cloud,and the interaction between the debris cloud and rear plate.Potential improvements of the protection performance focusing on these three steps are presented.Representative works in the last decade are mentioned specifically.Some prospects and suggestions for future studies are put forward. | Ken Wen Xiao-wei Chen Yong-gang Lu | 2021 | Defence Technology(防务技术)2021，17，6： | 2 |
| 4 | 聚能射流侵彻径向扩孔的可压缩模型显示文摘聚能射流侵彻厚靶时,对靶材同时进行轴向和径向挤压进而发生轴向侵彻和径向扩孔。本文中基于聚能射流侵彻可压缩模型并结合Szendrei-Held扩孔方程,推导给出考虑弹/靶材料可压缩性的聚能射流扩孔方程。为简化完整可压缩模型繁琐的计算过程,又基于Murnaghan状态方程给出可压缩模型的近似解。与水中聚能射流扩孔的实验研究对比分析,表明该模型预测优于Szendrei-Held扩孔方程。模型分析表明,射流半径、驻点压力、靶材强度、驻点处靶材密度以及聚能射流速度是影响聚能射流扩孔的主要因素。本文模型可以更准确地预测聚能射流侵彻可压缩性较强的靶材的扩孔情况。相关工作可为含液密闭结构干扰聚能射流侵彻提供理论基础。 | 李干 陈小伟 | 2022 | 爆炸与冲击2022，42，7： | 1 |
| 5 | 长杆高速侵彻下装甲钢靶的等效强度显示文摘装甲钢是复合装甲的主要组分之一,针对其抗长杆弹高速侵彻等效强度不明的问题,建立了三维SPH-FEM耦合模型。在验证模型可靠性的基础上,开展钨合金长杆弹在1 000~1 800 m/s初速度范围内侵彻半无限300~600 HBW装甲钢的仿真研究,基于侵彻阻力和Walker-Anderson(W-A)模型对高应变率-绝热工况下靶钢的等效强度进行探索。研究结果表明:侵彻过程分为初始瞬态、准定常和剩余侵彻3个阶段,W-A模型在大部分工况下可准确计算侵彻深度和准定常段头尾速度;准定常阶段杆体直径与靶体等效强度近似保持恒定,侵彻阻力可由Poncelet公式描述。基于以上分析建立装甲钢等效强度-硬度非线性换算模型,结合W-A模型能准确预测长杆弹对半无限靶的侵彻深度。此模型表明等效强度与硬度正相关,但热软化的增强与应变率强化的减弱使等效强度的增速逐渐放缓。 | 王积锐 王诚鑫 王艺霓 唐奎 薄其乐 | 2023 | 兵工学报2023，44，12： | 0 |
| 6 | Theoretical analysis for self-sharpening penetration of tungsten high-entropy alloy into steel target with elevated impact velocities显示文摘The“self-sharpening”effect has been observed experimentally in the penetration of tungsten high-entropy alloy(WHEA)into steel targets in previous study.From the microscopic observation of the residual WHEA long-rod projectile(LRP),the multiphase structure at micro-scale of WHEA is the key effects on self-sharpening penetration process.In order to describe the distinctive penetration behavior,the interaction between micro phases is introduced to modify the hydrodynamic penetration model.The yield strengths of WHEA phases are determined based on the solid solution strengthening methods.Combined with the elbow-streamline model,the self-sharpening mechanism is revealed in view of the multi-phase flow dynamics and the flow field in the deformation area of the LRP nose is characterized to depict the shear layer evolution and the shape of the LRP’s nose as well as the determination of the penetration channel.The self-sharpening coefficient considering the reduction of nose radius is proposed and introduced into the penetration model to calculate the depth of penetration and the penetration channel.Results show that the multi-phase interaction at the microscopic level contributes to the inhomogeneous distribution of the WHEA phases.The shear layer evolution separates part of the LRP material from the nose and makes the nose radius decrease more quickly.It is also the reason that WHEA LRPs have a pointed nose compared with the mushroom nose of WHA heavy alloy(WHA)LRPs.The calculated results agree well with the corresponding experimental data of WHA and WHEA LRPs penetrating into semi-infinite medium carbon steel targets with elevated impact velocities. | Haihua Chen Xianfeng Zhang Chuang Liu Wei Xiong Mengting Tan Lan-Hong Dai | 2021 | Acta Mechanica Sinica2021，37，6： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员