期刊文献+
共找到2,475篇文章
< 1 2 124 >
每页显示 20 50 100
Composite armor philosophy(CAP):Holistic design methodology of multi-layered composite protection systems for armored vehicles
1
作者 Evangelos Ch.Tsirogiannis Foivos Psarommatis +1 位作者 Alexandros Prospathopoulos Georgios Savaidis 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2024年第11期181-197,共17页
A philosophy for the design of novel,lightweight,multi-layered armor,referred to as Composite Armor Philosophy(CAP),which can adapt to the passive protection of light-,medium-,and heavy-armored vehicles,is presented i... A philosophy for the design of novel,lightweight,multi-layered armor,referred to as Composite Armor Philosophy(CAP),which can adapt to the passive protection of light-,medium-,and heavy-armored vehicles,is presented in this study.CAP can serve as a guiding principle to assist designers in comprehending the distinct roles fulfilled by each component.The CAP proposal comprises four functional layers,organized in a suggested hierarchy of materials.Particularly notable is the inclusion of a ceramic-composite principle,representing an advanced and innovative solution in the field of armor design.This paper showcases real-world defense industry applications,offering case studies that demonstrate the effectiveness of this advanced approach.CAP represents a significant milestone in the history of passive protection,marking an evolutionary leap in the field.This philosophical approach provides designers with a powerful toolset with which to enhance the protection capabilities of military vehicles,making them more resilient and better equipped to meet the challenges of modern warfare. 展开更多
关键词 Passive armor protection Composite armor Ballistic performance Protection systems Vehicle protection armor design
下载PDF
Study of the Ballistic Impact Behavior of Protective Multi-Layer Composite Armor
2
作者 Dongsheng Jia Yingjie Xu +2 位作者 Liangdi Wang Jihong Zhu Weihong Zhang 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第7期171-199,共29页
The abalone shell,a composite material whose cross-section is composed of inorganic and organic layers,has high strength and toughness.Inspired by the abalone shell,several multi-layer composite plates with different ... The abalone shell,a composite material whose cross-section is composed of inorganic and organic layers,has high strength and toughness.Inspired by the abalone shell,several multi-layer composite plates with different layer sequences and thicknesses are studied as bullet-proof material in this paper.To investigate the ballistic performance of this multi-layer structure,the complete characterization model and related material parameters of large deformation,failure and fracture ofAl_(2)O_(3)ceramics andCarbon Fiber Reinforced Polymer(CFRP)are studied.Then,3D finite element models of the proposed composite plates with different layer sequences and thicknesses impacted by a 12.7 mm armor-piercing incendiary(API)are built using Abaqus to predict failure.The simulation results show that the CFRP/Al2O3 ceramic/Ultrahigh Molecular Weight Polyethylene(UHMWPE)/CFRP(1 mm/4 mm/4 mm/1 mm)composite is the optimized stack of layers.The simulation results under specified layer sequence and thickness have a reasonable correlation with the experimental results and reflect the failure and fracture of the multi-layer composite protective armor. 展开更多
关键词 Protective armor COMPOSITE bionic design structure design mechanical property
下载PDF
New Method to Restrain Pumping Voltage of Braking Procedure for Brushless DC Motor of Electric Armored Vehicle 被引量:3
3
作者 郑慕侨 宋小庆 +1 位作者 孙德福 臧克茂 《Journal of Beijing Institute of Technology》 EI CAS 2002年第2期137-141,共5页
In order to restrain the high pumping voltage of braking procedure which is harmful to the system of electric armored vehicle. Based on the analysis of pumping voltage of the braking procedure, the relation between pu... In order to restrain the high pumping voltage of braking procedure which is harmful to the system of electric armored vehicle. Based on the analysis of pumping voltage of the braking procedure, the relation between pumping voltage and PWM ratio is derived and a new digital control method to restrain the pumping voltage by changing PWM ratio is put forward. Because the capacitance is decreased effectively, the volume of controller is reduced and the performance to price ratio is improved. The results of computer simulation and experiment proved that this method is feasible and valid. 展开更多
关键词 electrical armored vehicle brushless DC motor regenerative braking
下载PDF
Virtual Prototype Simulation and Reliability Analysis for Drive System of Armored Chassis 被引量:3
4
作者 刘金华 张彦 +2 位作者 曹立军 邵新杰 周景涛 《Journal of Donghua University(English Edition)》 EI CAS 2015年第1期166-170,共5页
Drive system is the key device of armored chassis. Its working state and reliability influence the maneuver performance of armored chassis directly. In order to simulate the failure process and evaluate the service re... Drive system is the key device of armored chassis. Its working state and reliability influence the maneuver performance of armored chassis directly. In order to simulate the failure process and evaluate the service reliability of drive system in training or battle missions,a new kind of dynamic simulation model and driving simulation platform of the complete drive system were established based on virtual prototype and finite element technology in this paper. Using the platform, the kinematics and dynamic characteristics of drive system were studied and analyzed in detail,the dynamic load spectrum of key components was obtained,the service life was predicted, and the service reliability evaluation results were provided. A simulation example of transmission gear was shown to illustrate the simulation and evaluation process. The result proves that the simulation method not only can be used to compute and evaluate the service reliability of complex mechanical mechanism, but also has high precision and reasonable computational cost. Therefore,simulation and reliability analysis based on virtual prototype of the armored chassis drive system will provide scientific reference for the formulation of armored chassis reasonable repair cycle. 展开更多
关键词 virtual prototype armored chassis drive system RELIABILITY load spectrum
下载PDF
Steering Control of Wheeled Armored Vehicle with Brushless DC Motor 被引量:1
5
作者 陈慧岩 王京起 郑培 《Journal of Beijing Institute of Technology》 EI CAS 2005年第3期310-313,共4页
Considering the steering characters of one type of wheeled armored vehicle, a brushless direct current (DC) motor is adapted as the actuator for steering control. After investigating the known algorithms, one kind o... Considering the steering characters of one type of wheeled armored vehicle, a brushless direct current (DC) motor is adapted as the actuator for steering control. After investigating the known algorithms, one kind of algorithm, which combines the fuzzy logic control with the self-adapting PID control and the startup and pre-hrake control, is put forward. Then a test-bed is constructed, and an experiment is conducted. The result of experiment confirms the validity of this algorithm in steering control of wheeled armored vehicle with brushless DC motor. 展开更多
关键词 steering control DC motor wheeled armored vehicle
下载PDF
Dynamics analysis of planar armored cable motion in deep-sea ROV system 被引量:3
6
作者 全伟才 张竺英 张艾群 《Journal of Central South University》 SCIE EI CAS 2014年第12期4456-4467,共12页
The armored cable used in a deep-sea remotely operated vehicle(ROV) may undergo large displacement motion when subjected to dynamic actions of ship heave motion and ocean current. A novel geometrically exact finite el... The armored cable used in a deep-sea remotely operated vehicle(ROV) may undergo large displacement motion when subjected to dynamic actions of ship heave motion and ocean current. A novel geometrically exact finite element model for two-dimensional dynamic analysis of armored cable is presented. This model accounts for the geometric nonlinearities of large displacement of the armored cable, and effects of axial load and bending stiffness. The governing equations are derived by consistent linearization and finite element discretization of the total weak form of the armored cable system, and solved by the Newmark time integration method. To make the solution procedure avoid falling into the local extreme points, a simple adaptive stepping strategy is proposed. The presented model is validated via actual measured data. Results for dynamic configurations, motion and tension of both ends of the armored cable, and resonance-zone are presented for two numerical cases, including the dynamic analysis under the case of only ship heave motion and the case of joint action of ship heave motion and ocean current. The dynamics analysis can provide important reference for the design or product selection of the armored cable in a deep-sea ROV system so as to improve the safety of its marine operation under the sea state of 4 or above. 展开更多
关键词 armored cable cable dynamics deep-sea remotely operated vehicle(ROV) resonance-zone geometrically exact model Newmark method
下载PDF
Vibration Severity Monitoring and Evaluation of Armored Vehicle Transmission
7
作者 樊新海 王传菲 +1 位作者 安钢 王战军 《Defence Technology(防务技术)》 SCIE EI CAS 2009年第4期256-260,共5页
Vibration monitoring and vibration severity evaluation of armored vehicle transmission are realized by additional sensors. An algorithm of vibration severity in frequency domain is presented. The algorithm has powerfu... Vibration monitoring and vibration severity evaluation of armored vehicle transmission are realized by additional sensors. An algorithm of vibration severity in frequency domain is presented. The algorithm has powerful applicability for signal type and flexible selectivity for frequency range,and avoids the processing of signal conversion used calculus and filtering compared to the algorithm of vibration severity in time domain. An applied example is given in company with attentive proceedings and measures for improving evaluation effect. 展开更多
关键词 MECHANICS armored vehicle TRANSMISSION condition monitoring vibration standard vibration severity
下载PDF
Statistical Analysis of Human Reliability of Armored Equipment 被引量:1
8
作者 刘维平 曹伟国 任晶 《Defence Technology(防务技术)》 SCIE EI CAS 2007年第3期230-234,共5页
Human errors of seven types of armored equipment, which occur during the course of field test, are statistically analyzed. The human error-to-armored equipment failure ratio is obtained. The causes of human errors are... Human errors of seven types of armored equipment, which occur during the course of field test, are statistically analyzed. The human error-to-armored equipment failure ratio is obtained. The causes of human errors are analyzed. The distribution law of human errors is acquired. The ratio of human errors and human reliability index are also calculated. 展开更多
关键词 数理统计学 装甲装备 操作错误事故 统计量
下载PDF
Failure Mode Effects and Criticality Analysis Method of Armored Equipment Based on Testability Growth
9
作者 曹艳华 郭金茂 吕会强 《Journal of Donghua University(English Edition)》 EI CAS 2018年第3期252-255,共4页
In view of the low level testability of armored equipment,the important significance of armored equipment testability growth is discussed in this paper.The failure mode effects and criticality analysis( FMECA) method ... In view of the low level testability of armored equipment,the important significance of armored equipment testability growth is discussed in this paper.The failure mode effects and criticality analysis( FMECA) method to realize testability growth is introduced.Centering on the testability growth demands of new armored equipment,the deficiencies of traditional FMECA are analyzed.And an enhanced FMECA( EFMECA) method is proposed.The method increases the analysis contents,combines the information before the failure occurrence and impending failure modes together organically.Then the failure symptoms is analyzed,the failure modes and effects is determined,and the state development trend is predicted.Finally,the application of EFMECA method is illustrated by the example of the failure mode of typical armored equipment engine. 展开更多
关键词 testability growth armored equipment the failure mode effects and criticality analysis(FMECA) design of testability
下载PDF
Intelligent Layout Method of the Powerhouse for Tank & Armored Vehicles Based on 3-Dimensional Rectangular Packing Theory 被引量:1
10
作者 王延龙 毛明 +1 位作者 陆一平 别杰民 《Defence Technology(防务技术)》 SCIE EI CAS 2005年第1期17-24,共8页
Probes into a new and effective method in arranging the powerhouses of tank & armored vehicles. Theory and method of 3-dimensional rectangular packing are adapted to arrange effectively almost all the systems and ... Probes into a new and effective method in arranging the powerhouses of tank & armored vehicles. Theory and method of 3-dimensional rectangular packing are adapted to arrange effectively almost all the systems and components in the powerhouse of the vehicle, thus the study can be regarded as an attempt for the theory's engineering applications in the field of tank & armored vehicle design. It is proved that most parts of the solutions attained are reasonable, and some of the solutions are innovative. 展开更多
关键词 智能规划法 坦克装甲 三维矩形装填 电力管理装置
下载PDF
Numerical Simulation of Airflow Field and Structure Improvement in Engine Compartment of Armored Vehicles with Electric Transmission
11
作者 王宪成 索文超 牛庆银 《Defence Technology(防务技术)》 SCIE EI CAS 2008年第1期7-12,共6页
When the mechanical drive is changed into the electric transmission,the cooling system of the engine compartment should be altered to meet the new requirement for the increasing in equipment such as electric apparatus... When the mechanical drive is changed into the electric transmission,the cooling system of the engine compartment should be altered to meet the new requirement for the increasing in equipment such as electric apparatus.In order to predict and analyze the rationality of cooling system in the virtual engine compartment,the numerical simulation of airflow fields in the engine compartment by using computational fluid dynamics(CFD) technique is necessary.An armored vehicle with electric transmission in the research is taken as the research object.The physical model and mathematical model for the computation of 3D air flow and heat transfer in the engine compartment of an armored vehicle with electric transmission is established.Turbulent flow in the compartment is described by using the standard k-ε two-equation turbulence model.The temperature and velocity fields of 3D air flow in the engine compartment are numerically simulated and analyzed based on different fan's flux.A theoretical basis for determination of the fan's flux is given by the simulation results.The positions of the air-vent shutter are analyzed.The simulation results show that the different positions of the air-vent shutter can lead to different cooling efficiencies. 展开更多
关键词 流体力学 装甲车 机舱 数字模拟
下载PDF
基于Armored RNA的BCR-ABL融合基因质控物研制
12
作者 李建英 毛玉环 刘珊玲 《检验医学与临床》 CAS 2020年第24期3588-3592,共5页
目的制备以MS2噬菌体装甲RNA(Armored RNA)为材料的BCR-ABL融合基因质控物。方法获取临床p210型BCR-ABL融合基因骨髓标本cDNA,PCR扩增p210型BCR-ABL融合基因片段和ABL内参基因片段。将MS2噬菌体成熟蛋白基因和衣壳蛋白基因克隆于pACYCDu... 目的制备以MS2噬菌体装甲RNA(Armored RNA)为材料的BCR-ABL融合基因质控物。方法获取临床p210型BCR-ABL融合基因骨髓标本cDNA,PCR扩增p210型BCR-ABL融合基因片段和ABL内参基因片段。将MS2噬菌体成熟蛋白基因和衣壳蛋白基因克隆于pACYCDuet-1,制成pACYC-MS2,然后将p210型BCR-ABL融合基因和ABL内参基因分别插入pACYC-MS2载体,经原核表达、分子筛纯化、反转录-PCR鉴定后分别制成包装有p210型BCR-ABL融合基因和ABL内参基因片段的病毒样颗粒(VLPs)。进行稳定性、均一性检测,同时判断质控物的适用性。结果成功制备了包装有p210型BCR-ABL融合基因和ABL内参基因的VLPs质控物。均一性检测表明质控物目的片段拷贝数水平是均一的。稳定性检测显示质控物标本在-20℃可至少稳定保存7个月,4℃稳定保存3个月,室温稳定保存15 d,37℃稳定保存1周。用实时荧光定量PCR试剂盒检测质控物水平,pACYC-MS2-p210 VLPs和pACYC-MS2-ABL VLPs标准曲线的R2分别为0.9940和0.9917,具有很好的适用性。结论将Armored RNA作为材料所制备的BCR-ABL融合基因质控物稳定性、均一性较好,适用于评价BCR-ABL融合基因检测试剂盒的性能,具有广泛的应用前景。 展开更多
关键词 BCR-ABL融合基因 装甲RNA 质控物 性能评价
下载PDF
反装甲导弹导引头抗干扰能力与关键技术发展
13
作者 李召 徐文旭 王磊 《兵工自动化》 北大核心 2024年第3期1-6,11,共7页
针对反装甲导弹面临的复杂战场环境、多样化作战目标和复杂干扰环境,分析其抗干扰能力和关键技术需求。分析反装甲导弹导引头面临的干扰威胁、抗干扰特点和不足,以科学高效提升反装甲导弹导引头抗干扰能力为目标,给出相关措施与建议。... 针对反装甲导弹面临的复杂战场环境、多样化作战目标和复杂干扰环境,分析其抗干扰能力和关键技术需求。分析反装甲导弹导引头面临的干扰威胁、抗干扰特点和不足,以科学高效提升反装甲导弹导引头抗干扰能力为目标,给出相关措施与建议。结果表明,该分析可为提升反装甲导引头抗干扰能力提供参考。 展开更多
关键词 反装甲导弹 导引头 抗干扰
下载PDF
两种钛合金半穿甲战斗部侵彻单层钢靶性能试验研究
14
作者 畅博 张帆 +2 位作者 彭军 全嘉林 张萌昭 《兵器装备工程学报》 CAS CSCD 北大核心 2024年第6期81-86,共6页
选取亚稳态β型TB17和高损伤容限α+β型TC4-DT两种高韧钛合金材料,对2种钛合金材料在高应变率条件下动态力学响应特性进行测试分析,并应用125 mm火炮发射装置开展2种钛合金半穿甲战斗部侵彻单层钢靶性能试验研究。结果表明,作为半穿甲... 选取亚稳态β型TB17和高损伤容限α+β型TC4-DT两种高韧钛合金材料,对2种钛合金材料在高应变率条件下动态力学响应特性进行测试分析,并应用125 mm火炮发射装置开展2种钛合金半穿甲战斗部侵彻单层钢靶性能试验研究。结果表明,作为半穿甲战斗部的壳体材料,应选择屈服强度与冲击韧性匹配性好的钛合金,其中更应关注钛合金材料的塑性变形能力和抗冲击韧性;随着侵彻着角的增加,侵彻单层钢靶过程弹体头部侵蚀量及径向墩粗程度更严重,不利于弹体保持侵彻强度及装药安定性。 展开更多
关键词 钛合金 半穿甲战斗部 单层钢靶 侵彻着角
下载PDF
基于隔振率及动态传递力测试的某动力总成悬置隔振性能试验与特性分析
15
作者 李欣 曹宇 +1 位作者 肖洁 陈璐 《兵器装备工程学报》 CAS CSCD 北大核心 2024年第5期93-99,150,共8页
针对某型装甲车辆动力总成中发动机右侧悬置易损坏,其寿命较其他3点悬置寿命更短的问题,开展了故障诊断测试。经测量动力总成悬置4点支撑位置上、下点振动加速度以及4个悬置系统垫块的支撑力数据并分析研究发现,悬置系统4个支撑点中发... 针对某型装甲车辆动力总成中发动机右侧悬置易损坏,其寿命较其他3点悬置寿命更短的问题,开展了故障诊断测试。经测量动力总成悬置4点支撑位置上、下点振动加速度以及4个悬置系统垫块的支撑力数据并分析研究发现,悬置系统4个支撑点中发动机右侧悬置支撑点垂直向隔振率最差,而该处悬置垂直支撑力较其他3位置悬置支撑力大。这正是该位置悬置系统寿命低的直接原因,最后根据测试分析结果提出了优化建议,建议从承重、发动机工作频率范围、悬置结构、形式及其刚度、阻尼、多向隔振要求上考虑对该型车辆的动力总成悬置系统进行优化,以提升动力总成悬置系统总体隔振效果。 展开更多
关键词 装甲车辆 动力总成悬置 隔振率
下载PDF
加强筋位置对半穿甲战斗部侵彻多层钢靶性能影响研究
16
作者 赵晨钟 张丁山 +1 位作者 张博 吕永柱 《兵器装备工程学报》 CAS CSCD 北大核心 2024年第1期66-72,共7页
为了研究加强筋位置对半穿甲战斗部侵彻多层钢靶性能的影响,通过试验及数值仿真,研究了加强筋在弹体轴向不同位置处的2种半穿甲战斗部,以一定速度(710 m/s)、着角(20°)侵彻8层钢靶的弹道偏转、弹孔尺寸、余速的差异。研究结果表明... 为了研究加强筋位置对半穿甲战斗部侵彻多层钢靶性能的影响,通过试验及数值仿真,研究了加强筋在弹体轴向不同位置处的2种半穿甲战斗部,以一定速度(710 m/s)、着角(20°)侵彻8层钢靶的弹道偏转、弹孔尺寸、余速的差异。研究结果表明:加强筋位置由弹尖向质心位置逼近时弹道偏转角减小、弹孔长轴减小、穿甲能力提升;弹道偏转角增量与靶间距呈正相关关系;弹道偏转角、侵彻余速、弹头侵蚀量及弹孔仿真结果与试验实测值最大偏差为8.82%,仿真与试验结果符合较好。研究结果可为半穿甲战斗部方案设计提供参考。 展开更多
关键词 加强筋 半穿甲战斗部 弹道偏转角 多层钢靶 侵彻弹孔
下载PDF
一种基于光电自准直法的装甲战车原位校炮系统
17
作者 朱金达 董建国 +3 位作者 张卫民 霍宁 郑明 黄风山 《河北工业科技》 CAS 2024年第2期148-153,共6页
为了解决当前装甲战车校炮时空受限、精度低、过程复杂、无法现场原位校炮等问题,提出了一种基于光电自准直法的装甲战车原位校炮系统。基于镜炮一致性原理,设计校炮装置的机械结构;构建平行光管及其内部光路结构,利用光学自准直原理实... 为了解决当前装甲战车校炮时空受限、精度低、过程复杂、无法现场原位校炮等问题,提出了一种基于光电自准直法的装甲战车原位校炮系统。基于镜炮一致性原理,设计校炮装置的机械结构;构建平行光管及其内部光路结构,利用光学自准直原理实现模拟无穷远处虚拟靶标;建立校炮装置的误差模型,通过对误差模型进行分析与合成以评定校炮装置参数的精确性,确定装置允许的最大误差值;通过实验对系统性能进行了实际测试与验证。结果表明:利用所设计的误差模型,其校准误差最大不超过传统校炮方式的60%,且时间缩短了一半以上,符合设计要求,具有较强的稳定性。装甲战车原位校炮系统可应用于装甲战车校炮工作,提高校炮的效率及精度、实现现场原位校准,为装甲战车校炮提供了一种新方法、新思路。 展开更多
关键词 机械学其他学科 装甲战车 校炮 瞄准精度 误差分析
下载PDF
焊丝成分对超高强装甲钢焊接接头组织与性能的影响
18
作者 郑道友 徐宇欣 +1 位作者 王苏煜 王文权 《材料导报》 EI CAS CSCD 北大核心 2024年第10期136-142,共7页
利用气体保护电弧焊工艺完成了4.5 mm和9.0 mm超高强装甲钢的焊接,研究了焊丝(MG70S-6和ER307Si焊丝)成分对接头组织与性能的影响,通过光学显微镜(OM)、扫描电子显微镜(SEM)、能谱分析(EDS)、X射线衍射(XRD)等表征方法对焊接接头各区域... 利用气体保护电弧焊工艺完成了4.5 mm和9.0 mm超高强装甲钢的焊接,研究了焊丝(MG70S-6和ER307Si焊丝)成分对接头组织与性能的影响,通过光学显微镜(OM)、扫描电子显微镜(SEM)、能谱分析(EDS)、X射线衍射(XRD)等表征方法对焊接接头各区域进行微观组织和物相结构的分析,并测试了接头的硬度分布、拉伸性能和冲击韧性。结果表明,焊接接头成形质量良好,无明显未熔合、气孔、裂纹等缺陷,焊缝区组织为片状马氏体、针状铁素体和少量粒状贝氏体,完全淬火区组织为马氏体和贝氏体,不完全淬火区组织为马氏体和铁素体,回火区析出网状渗碳体。焊接接头的热影响区软化现象较为明显,接头难以达到与母材等强,断裂主要发生在焊缝区,呈现出脆性断裂特征。采用ER307Si焊丝焊接的9.0 mm装甲钢接头的焊缝室温冲击功达到94 J,完全满足使用要求。 展开更多
关键词 超高强装甲钢 气体保护电弧焊 微观组织 力学性能
下载PDF
层间摩擦系数对非黏结柔性管抗拉铠装层轴压屈曲失效模式的影响研究
19
作者 马维林 田浩宇 +4 位作者 刘栋杰 孙大林 徐朋朋 王双 杨永春 《海洋工程》 CSCD 北大核心 2024年第3期60-68,共9页
在柔性管运输、铺设安装和服役过程中,由于其抗拉铠装层钢带为柔性细长螺旋结构,当外部载荷超过临界值时,抗拉铠装层钢带容易发生屈曲失效。考虑非线性材料、几何大变形、层间接触和摩擦等非线性效应的影响,运用ABAQUS有限元软件建立了6... 在柔性管运输、铺设安装和服役过程中,由于其抗拉铠装层钢带为柔性细长螺旋结构,当外部载荷超过临界值时,抗拉铠装层钢带容易发生屈曲失效。考虑非线性材料、几何大变形、层间接触和摩擦等非线性效应的影响,运用ABAQUS有限元软件建立了63.5mm典型非黏结柔性管8层完整结构模型,研究了在抗拉铠装层不同层间摩擦系数的情况下,非黏结柔性管在轴向压缩载荷作用下的力学性能和屈曲失效模式。研究结果表明,层间摩擦系数对非黏结柔性管的抗压刚度和抗拉铠装层屈曲失效模式有较大影响,层间摩擦系数以0.1和0.2为分界点,抗压刚度和屈曲失效模式均呈现出“三段式”变化规律。研究成果可为海洋非黏结柔性管的结构设计和屈曲失效评估提供技术参考。 展开更多
关键词 非黏结柔性管 抗拉铠装层 屈曲失效模式 轴向压缩载荷 层间摩擦系数
下载PDF
抗半速12.7mm穿甲燃烧弹陶瓷装甲数值模拟与试验研究
20
作者 艾青松 李宗家 +1 位作者 虎龙 李年华 《合成纤维》 CAS 2024年第10期26-31,共6页
为了研究半速12.7 mm穿甲燃烧弹侵彻条件下,陶瓷横向尺寸对其抗弹性能的影响规律以及陶瓷抗弹性能对支撑条件的响应,同时探究可实现有效防护的复合装甲结构,采用ANSYS/LS-DYNA有限元软件对弹体侵彻陶瓷复合装甲的过程进行数值模拟,并进... 为了研究半速12.7 mm穿甲燃烧弹侵彻条件下,陶瓷横向尺寸对其抗弹性能的影响规律以及陶瓷抗弹性能对支撑条件的响应,同时探究可实现有效防护的复合装甲结构,采用ANSYS/LS-DYNA有限元软件对弹体侵彻陶瓷复合装甲的过程进行数值模拟,并进行靶试试验验证。结果表明:随着陶瓷横向尺寸增大,其消耗弹体能量比例不断增加,当陶瓷尺寸增大至6倍弹径时,其消耗弹体能量比例基本稳定;陶瓷抗弹性能与其支撑条件相关,碳纤维对陶瓷的支撑作用大于PE对陶瓷的支撑作用;12 mm碳化硅+3 mm碳纤维+12 mm PE组成的陶瓷复合装甲可实现抗半速12.7 mm穿甲燃烧弹的有效防护。数值模拟分析结果和试验结果吻合良好,说明了数值模拟方法的正确性和模拟结果的有效性。 展开更多
关键词 陶瓷 复合装甲 碳纤维 数值模拟 试验研究
原文传递
上一页 1 2 124 下一页 到第
使用帮助 返回顶部