基于公共燃气排导结构的共架发射系统武器选择与布局方法

公共燃气排导结构和同心筒结构的共架发射系统由于燃气排导机理不同,其对武器发射的影响及在武器选择、布局等方面均存在较大差异.针对公共燃气排导结构的共架发射系统分析了公共燃气排导对武器发射的影响,提出了武器选择与布局方法,通过算例进行了验证并得出结论:公共燃气排导结构的共架发射系统武器布局上应采取分散布局,武器选择上应优先选择“无发射活动、对应武器数量较多、烧蚀值较小”的模块,且按照模块编号依次交替在不同模块进行武器发射.     

基于复杂网络的武器装备重要度评估方法

针对现有武器装备重要度评估方法存在的缺点和不足,基于复杂网络中改进的节点重要度评估指标和方法,建立了武器装备重要度评估模型。该方法不仅描述了武器装备在装备体系中的重要程度,也反映了武器装备失效后的修复情况。最后通过一评估示例,说明了方法的有效性和适应性。     

基于复杂网络的防空武器系统目标选择研究

基于复杂网络的思想,通过对防空武器目标体系网络的拓扑参数分析,构建了防空武器目标体系网络,利用pajek软件,对网络进行了可视化分析,采用基于不同策略的攻击方式进行了模拟仿真,对仿真结果进行了分析。经过分析发现,基于节点度值和基于节点介数的攻击可以较好的降低网络效率,因此我们以节点度值和介数为主要依据,确定了目标打击顺序,为指挥决策人员进行防空目标选择提供了借鉴和参考。     

Peridynamic modeling and simulation of thermo-mechanical de-icing process with modified ice failure criterion

De-icing technology has become an increasingly important subject in numerous applications in recent years. However, the direct numerical modeling and simulation the physical process of thermo-mechanical deicing is limited. This work is focusing on developing a numerical model and tool to direct simulate the de-icing process in the framework of the coupled thermo-mechanical peridynamics theory. Here, we adopted the fully coupled thermo-mechanical bond-based peridynamics (TM-BB-PD) method for modeling and simulation of de-icing. Within the framework of TM-BB-PD, the ice consti-tutive model is established by considering the influence of the temperature difference between two material points, and a modified failure criteria is proposed, which takes into account temperature effect to predict the damage of quasi-brittle ice material. Moreover, thermal boundary condition is used to simulate the thermal load in the de-icing process. By comparing with the experimental results and the previous reportedfinite element modeling, our numerical model shows good agreement with the pre-vious predictions. Based on the numerical results, we find that the developed method can not only predict crack initiation and propagation in the ice, but also predict the temperature distribution and heat conduction during the de-icing process. Furthermore, the influence of the temperature for the ice crack growth pattern is discussed accordingly. In conclusion, the coupled thermal-mechanical peridynamics formulation with modified failure criterion is capable of providing a modeling tool for engineering ap-plications of de-icing technology.     

The effect of al particle size on thermal decomposition,mechanical strength and sensitivity of Al/ZrH2/PTFE composite

To study the thermal decomposition of Al/ZrH2/PTFE with different Al particle size as well as mechanical strength and impact sensitivity under medium and low strain rates, molding-vacuum sintering was adopted to prepare four groups of power materials and cylindrical specimens with different Al particle size. The active decomposition temperature of ZrH2 was obtained by TG-DSC, and the quasi-static me-chanics/reaction characteristics as well as the impact sensitivity of the specimen were studied respec-tively by quasi-static compression and drop-hammer test. The results show that the yield strength of the material decreased with the increase of the Al particle size, while the compressive strength, failure strain and toughness increased first and then decreased, which reached the maximum values of 116.61 MPa, 191％, and 119.9 MJ/m respectively when the Al particle size is 12—14μm because of particle size grading. The specimens with the highest strength and toughness formed circumferential open cracks and reacted partly when pressed. Those with developmental cracks formed inside did not react. It is considered that fracture of specimens first triggered initial reaction between Al and PTFE to release an amount of heat. Then ZrH2 was activated and decomposed, and participated in subsequent reaction to generate ZrC. The impact sensitivity of the specimens decreased with the increase of Al particle size.     

光电型舰炮武器系统对海校射模拟训练的实现

针对目前光电型舰炮武器系统模拟训练设备的特点,介绍了以光电跟踪仪为传感器的舰炮武器系统对海校射及其模拟的基本原理,以及主要技术实现和工作过程,并列举了其在武器射击操作模拟训练等方面的应用。该原理很好的提高了光电型舰炮武器系统的射击精度,同时也为系统的日常维护和检查提供了多方面的帮助。     

激光防空武器杀伤概率

针对高功率防空激光武器的射击特性,运用概率论讨论了激光武器"光弹"的杀伤概率。将单发"光弹"杀伤目标作为一随机事件,按先后分"光弹"击中目标中心点和"光弹"击中目标后对目标的损伤程度两个相互独立的事件,分别用射击误差和目标坐标杀伤概率表示。建立了计算射击误差和目标坐标杀伤概率模型,得到了单发"光弹"的杀伤概率,进而得到了对同一目标连射n发"光弹"的杀伤概率,并根据激光能量饱和密度划分了对目标的杀伤效果,即硬杀伤、软杀伤和干扰,对激光武器研制提供理论参考。