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41.
一种用于越肩发射截获区分析的方法 总被引:1,自引:1,他引:1
在越肩发射原理仿真 4进行后 ,提出了一种新的方法用于越肩发射的截获区分析。与传统的弹道处理方法相比 ,这种方法主要是把越肩发射作为一个物理过程考虑 ,而不是仅仅考虑是否命中 ,这样就可以综合考虑影响越肩发射整个过程的各个因素。通过采用这种方法分析越肩发射截获区 ,在最后得出一些有益且不同与过去弹道分析的结论。 相似文献
42.
针对弹药装填机器人作业过程复杂的问题,基于作业任务实用性和可操作性的要求,设计了一种作业平台仿真系统。在深入分析弹药装填机器人作业任务和工作过程的基础上,构建了总体设计方案,研究了仿真系统的稳定性技术,进行了运动控制、数据采集以及传感器精度等硬件部分设计和模块化技术的软件设计,建立了弹药装填机器人仿真系统。仿真结果表明:该设计能够实现对弹药装填机器人的控制和实时作业。 相似文献
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提出了一种基于预配载思想的装备物资混装配载策略,并应用模糊聚类和混合智能算法进行了实例仿真。研究对于组合优化策略在装备保障信息化系统建设中的应用具有积极意义。 相似文献
45.
以汽车为例介绍了物资装载时横装、顺装和混装等几种模型,并对其算法进行了归纳。设想了一个以物资出入库为原型的可视化系统,并以建立的装运模型为基础,设计了可视化提货系统的实现过程。 相似文献
46.
In this paper, we study the problem of scheduling quay cranes (QCs) at container terminals where incoming vessels have different ready times. The objective is to minimize the maximum relative tardiness of vessel departures. The problem can be formulated as a mixed integer linear programming (MILP) model of large size that is difficult to solve directly. We propose a heuristic decomposition approach to breakdown the problem into two smaller, linked models, the vessel‐level and the berth‐level models. With the same berth‐level model, two heuristic methods are developed using different vessel‐level models. Computational experiments show that the proposed approach is effective and efficient. © 2005 Wiley Periodicals, Inc. Naval Research Logistics, 2006 相似文献
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In this paper eight successive experimental blast tests with an increasing TNT equivalent charge weights ranging from 0.56 kg to 17.78 kg were conducted on unreinforced, ferrocemented overlay masonry and confined masonry walls. The pressure-time history caused by the blast was recorded by pressure sensors installed on the test specimen. The resulting damage pattern was observed during each test. Weak zones in the three systems of masonry were identified. Scaled distances for different damage levels in the three masonry systems were experimentally obtained. The results provide a basis for determining the response of each masonry system against blast loading. Consequently, efficiency of ferrocemented overlay ma-sonry and confined masonry was found established in mitigation against blast loads. 相似文献
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Projectiles made of reactive structure materials(RSM)can damage the target with not only kinetic but also chemical energy,but the enhanced damage potential of RSM may become compromised if extreme loading condition disintegrates the projectile before the target is reached.In this work,a ductile coating of Ni was introduced to a tungsten-zirconium(W-Zr)alloy,a typical brittle RSM,to preserve the damage potential of the projectile.Detonation driving tests were carried out with X-ray photography and gun-powder deflagration driving tests were carried out with high-speed photography for the coated and uncoated RSM samples,respectively.The craters on the witness target were analyzed by scanning electron microscopy and X-ray diffraction.The Ni coating was found to effectively preserve the damage potential of the W-Zr alloy under extreme loading conditions,whereas the uncoated sample fractured and ignited before impacting the target in both detonation and deflagration driving.The crack propa-gation between the reactively brittle core and the ductile coating was analyzed based on the crack arrest theory to mechanistically demonstrate how the coating improves the structural integrity and preserves the damage potential of the projectile.Specifically,the Ni coating envelops the W-Zr core until the coated sphere penetrates the target,and the coating is then eroded and worn to release the reactive core for the projectile to damage the target more intensively. 相似文献
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平面动载实验中 ,飞片碰撞速度和碰撞状态是加载条件的一个基本描述。本文采用电探针技术 ,给出了一个同时测得真实飞片速度和碰撞倾斜状态的探针排布设计。此设计用于化爆产生平面动载的氮化硅粉体冲击波活化研究 ,取得了较为理想的测试结果。 相似文献
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