共查询到20条相似文献,搜索用时 46 毫秒
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受二级轻气炮发射速度的限制,在以往研究中极少进行弹体速度大于8 km/s的Whipple防护结构撞击试验,导致建立高速区弹道极限方程所依据的实验数据并不能完全反映Whipple防护结构在高速区的防护能力。通过将GRAY三相物态方程代入自编物质点法计算程序,对厚靶侵彻、Whipple防护结构高速区撞击等工况进行数值模拟,得到Whipple防护结构在高速区的弹道极限,仿真结果表明其高速区防护能力高于弹道极限方程的预测,对航天器防护结构的设计具有参考价值。 相似文献
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基于攻防体系对抗的研究方法,对重点交通目标一体化防护体系结构进行了改进和动态建模,反映了现代空袭实时打击、动态过程化的特征;该防护体系集信息告警与处理、系统决策、防护措施、防护效果评定与信息反馈为一体,综合运用优化理论以提高系统防护能力。在系统研究攻防对抗的基础上,构建了目标一体化防护的总体分析模型,并运用对策论方法进行模型转换与系统评价。结合算例,对一体化防护策略的灵敏度特征进行了深入探讨,该模型充分体现了对抗局势的特征,具有动态性、客观性、实用性等特点。 相似文献
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水雷对舰船的毁伤概率计算模型及仿真 总被引:1,自引:0,他引:1
水雷障碍的作战效能研究是目前研究的重点.基于具有机动能力的水雷的特点,综合考虑了水雷障碍中水雷的布放成功率、命中概率、水雷的可靠度和动作概率等主要因素对目标舰船毁伤概率的影响,提出了目标舰船航线的选择服从均匀分布时和目标舰船航向服从正态分布时的目标舰船遭遇水雷概率计算模型,建立了基于具有机动能力水雷对目标舰船的毁伤概率模型,并进行了仿真验证,具有较高的实用性. 相似文献
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单艘舰船的部署能力主要取决于其修理结构,而编队的使用需求对单舰修理结构的制定具有重要的影响。针对编队的使用需求,采用时间序列法对舰船修理结构进行优化研究。首先从改变舰船基地级修理间隔期的角度出发,建立编队条件下舰船修理结构的优化模型。然后针对模型的组合优化问题,利用遗传算法实现模型的优化求解。最后采用编队算例进行求解验证,实验结果表明:调整编队中各舰船的修理结构后,编队服役期内可用舰艇的数量的波动幅度明显减小,且可用舰艇数量较小的时间点显著减少,从而提高了编队的整体部署能力。 相似文献
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《系统工程理论与实践》2014,(5)
正August 10-14,2015Beijing,ChinaThe International Congress on Industrial and Applied Mathematics(ICIAM)is the premier international congress in the field of applied mathematics held every four years under the auspices of the International Council for Industrial and Applied Mathematics.From August 10 to 14,2015,mathematicians,scientists 相似文献
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《系统科学与系统工程学报(英文版)》2014,(2)
正AF:Any Field The School of Economics and Management at Tsinghua University(Tsinghua SEM)invites applications for faculty positions at all levels(Assistant Professor,Associate Professor and Full Professor)in any fields of business administration and management.Tsinghua SEM is the only school 相似文献
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《系统科学与系统工程学报(英文版)》2014,(4)
正June 22-24,2015Guangzhou,China http://iec.cnsba.com/index.htmlCo-Sponsored by:ffiEE SMC(pending)South China University of Technology The Chinese University of Hong Kong Tsinghua UniversityHosted bv:School of Business Administration,South China University of Technology,China Conference Co-Chairs: 相似文献
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The paper is about negotiating with issues that discourage innovation. The subject is environmental deterioration, with concern directed at the impediments that keep it from being innovatively resolved. The paper is organized around three issues. (1) The dominant model of environmental concern, called environmental protection, is managed predominantly via command and control approaches. (2) Command and control, by relying on analytical segmentation to subdivide the problem into digestible bits and using formal legislation to direct it, are not up to emerging challenges in the area. (3) More robust models are available but difficult to experiment with due to impediments that discourage change. These impediments are seen in ideals associated with protection, prevention, recycling, and sustainability that tend to do more to sustain harmful practices than to seek beneficial alternatives. Being able to appreciate the underlying restrictions of entropy could help stimulate a more innovative agenda. These issues are tested via a project funded by the EPA entitled ENERGY STAR Homes. 相似文献