地面战场侦察传感器系统的发展状况及技术分析

主要介绍了国内外地面战场侦察传感器系统的主要用途、基本组成和分类,对其未来发展趋势进行了分析,根据我军地面战场侦察传感器系统的技术现状提出了需要解决的关键问题。     

综合战场态势组件化表达模型研究?

战场态势是控制作战节奏、把握战斗进程的重要手段。借鉴组件化建模的思想，采用组件组合描述态势要素的方式，提出了一种崭新的战场态势表达模型。该模型构建了以态势图层为中心的管理机制、以“态”表达组件和“势”表达组件进行组合描述态势要素的建模机制和以图层服务为手段的功能扩展机制，可以显著增强战场态势显示的灵活性和提高系统功能的可扩展性。     

Maximizing deviation method for multiple attribute decision making under q-rung orthopair fuzzy environment

Because of the uncertainty and subjectivity of decision makers in the complex decision-making environment, the evaluation information of alternatives given by decision makers is often fuzzy and uncertain. As a generalization of intuitionistic fuzzy set (IFSs) and Pythagoras fuzzy set (PFSs), q-rung orthopair fuzzy set (q-ROFS) is more suitable for expressing fuzzy and uncertain information. But, in actual multiple attribute decision making (MADM) problems, the weights of DMs and attributes are always completely unknown or partly known, to date, the maximizing deviation method is a good tool to deal with such issues. Thus, combine the q-ROFS and conventional maximizing deviation method, we will study the maximizing deviation method under q-ROFSs and q-RIVOFSs in this paper. Firstly, we briefly introduce the basic concept of q-rung orthopair fuzzy sets (q-ROFSs) and q-rung interval-valued orthopair fuzzy sets (q-RIVOFSs). Then, combine the maximizing deviation method with q-rung orthopair fuzzy information, we establish two new decision making models. On this basis, the proposed models are applied to MADM problems with q-rung orthopair fuzzy information. Compared with existing methods, the effectiveness and superiority of the new model are analyzed. This method can effectively solve the MADM problem whose decision information is represented by q-rung orthopair fuzzy numbers (q-ROFNs) and whose attributes are incomplete.     

战场损伤快速评估系统数据库研究

从装备战场损伤快速评估需求出发 ,探讨了通用战场损伤快速评估系统的功能及其构成 ,并重点对其中数据库系统的设计与开发进行了详细讨论 ,在此基础上开发了通用装备战场损伤快速评估数据库系统     

压电材料中的共线非等长多裂纹问题

建立了横观各向同性压电材料中的共线非等长多裂纹模型。将裂纹模拟为连续分布的广义位错,推导了单点广义位错的格林函数,并基于此得到了共线非等长多裂纹的奇异积分方程组,最后由数值计算给出了裂纹尖端的能量释放率。对奇异积分方程组的退化分析和对称条件下的数值结果的讨论,验证了本文结果的正确性。研究表明:当共线裂纹间距小于裂纹长度时,裂纹尖端场存在显著的干涉效应;裂纹越长,干涉效应越显著;电载荷系数越大,能量释放率也越大;相对于外侧尖端而言,共线裂纹内侧尖端对电载荷系数更为敏感。     

压电界面电极的应力强度因子

建立了压电界面电极的力学模型，利用有限傅里叶变换方法将相应的力电耦合问题描述为奇异积分方程，并得到了界面应力及其强度因子的解析解。讨论了结构几何参数对应力强度因子的影响。基于强度设计的观点得到两方面的结论：一是界面中心电极优于偏置电极；二是界面长度的最优值为中心电极长度的2倍。     

基于多目标多维模糊决策的装备战场损伤等级评定方法

针对装备战场损伤等级评定中具有较大的模糊性和随机性问题,应用多目标多维模糊决策的基本原理,提出一种带有信息熵和调控系数的目标函数,得到新的模糊决策识别矩阵和目标权重的计算模型,为装备战场损伤等级评定提供了一种有效方法。该方法根据3种不同情况,给出了相应的计算步骤,计算结果较准确地反映了装备战场损伤程度。新的计算模型不仅对多目标多维模糊决策理论模型的发展进行了尝试,而且丰富了装备战场损伤等级评定方法。     

基于OODA环的信息化战场信息安全保障SD建模分析?

为深入研究信息化战场信息安全保障，提高保障效能，利用OODA环理论对信息化战场信息安全保障过程进行了分析与研究，明确了观察、判断、决策和行动每个阶段的任务与事件，并运用系统动力学方法对基于OODA环的信息化战场信息安全保障过程进行建模分析和模拟仿真，仿真结果表明随着时间推移，保障方得到的信息增多，判断和决策的正确率也随之增加，OODA环周期开始减小，保障效能随之大幅提升。研究结果对于提升信息化战场信息安全保障效能具有一定的参考价值。     

Analysis for the residual prestress of composite barrel for railgun with tension winding

Based on the elastic theory of cylindrical shells and the theory of composite laminates, a prediction model for the residual prestress of the simplified round composite barrel for railgun is established. Only the fibre pretension is considered in this model. A three dimensional numerical simulation for the residual prestress in the railgun barrel is carried out, by combining the temperature differential method with the element birth and death technology. The results obtained by the two methods are compared. It reveals that the distribution trends of residual prestress are consistent. And the difference for residual prestress in the filament wound composite housing of barrel is relatively small. The same finite element method is used to analysis the residual prestress in the non-simplified composite barrels for railgun, which are under different control modes of winding tension. The results mean that the residual prestress in barrel will increase while the taper coefficient for winding is decreasing. Therefore, the sealing performance in bore is improved, but the strength of the filament wound composite housing drops. In addition, the axial and circumferential residual prestress in the filament wound composite housing with constant torque winding are close to the ones in iso-stress design for barrel.     

B4C/Al复合板中应力波行为分析（Ⅰ）

依据7.62mm穿甲燃烧弹与B4C,Al板的物理和力学特性,提出弹、板的力学模型;在此基础上,给出弹板碰撞后B4C/Al复合板的弹性动力学方程,建立应力波的传播模型,讨论了应力波传播时复合板的力学行为,最后确定了复合板承受的初始冲击应力。理论分析表明：一维应变条件的B4C和Al板的弹性极限高于一维应力条件下的值;弹、板间的作用力服从指数衰减规律;B4C板的初始应力高于430MPa时,应力波的作用使Al板在卸载过程中发生反向屈服。