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71.
72.
美军作战实验室建设研究 总被引:1,自引:0,他引:1
简要回顾了美军作战实验发展的历史,从军种到联合详细阐述了美军作战实验室完整的体系,并简要介绍了各作战实验室所完成的典型实验,研究了美军作战实验室主要的实验方法和技术手段,剖析了美军作战实验室的运行机制,探讨了美军作战实验室建设带给我们的启示。 相似文献
73.
对贵阳市某大楼型钢混凝土桁架转换层进行了施工期间的监控,并利用有限元分析软件ANSYS建立了带有型钢混凝土桁架转换层的结构有限元分析模型.针对工程中连接、构造和施工影响等相关因素进行有限元模型的对比分析,明确各因素对桁架受力的影响.结合施工阶段的监控数据,分析此工程中桁架受力状态的成因,为准确判断工程在正常投入使用后的... 相似文献
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The Cr-plated coating inside a gun barrel can effectively improve the barrel's erosion resistance and thus increase the service life.However,due to the cyclic thermal load caused by high-temperature gun-powder,micro-element damage tends to occur within the Cr coating/steel substrate interface,leading to a gradual deterioration in macro-mechanical properties for the material in the related region.In order to mimic this cyclic thermal load and,thereby,study the thermal erosion behavior of the Cr coating on the barrel's inner wall,a laser emitter is utilized in the current study.With the help of in-situ tensile test and finite element simulation results,a shear stress distribution law of the Cr coating/steel substrate and a change law of the interface ultimate shear strength are identified.Studies have shown that the Cr coating/steel substrate interface's ultimate shear strength has a significant weakening effect due to increasing temperature.In this study,the interfacial ultimate shear strength decreases from 2.57 GPa(no erosion)to 1.02 GPa(laser power is 160 W).The data from this experiment is employed to establish a Cr coating/steel substrate interface shear damage model.And this model is used to predict the flaking process of Cr coating by finite element method.The simulation results show that the increase of coating crack spacing and coating thickness will increase the service life of gun barrel. 相似文献
76.
结合装备表面智能维修保养技术方面的研究成果,介绍了装甲装备故障智能检测技术、自适应、自修复功能材料,装甲装备器材全自动保养设备等先进技术,侧重装备维修保养阐述了如何提高信息化程度,推进军队武器装备维修保养技术的现代化建设。 相似文献
77.
采用恒温加载试验方法对钢结构建筑常用的Q345低合金结构钢的高温强度进行试验研究,采用切线交点法确定钢材有效屈服强度,并与其它方法强度取值进行对比,给出钢材高温强度回归公式,为钢结构建筑的抗火分析提供依据。 相似文献
78.
Erin D. Dumbacher 《The Nonproliferation Review》2013,20(3-4):203-222
ABSTRACTAn arms race in cyberspace is underway. US and Western government efforts to control this process have largely been limited to deterrence and norm development. This article examines an alternative policy option: arms control. To gauge whether arms-control models offer useful lessons for addressing cyber capabilities, this article compiles a new dataset of predominantly twentieth-century arms-control agreements. It also evaluates two case studies of negotiated agreements that regulate dual-use technologies, the 1928 Geneva Protocol prohibiting chemical- and biological-weapon use and the 1944 Chicago Convention on International Civil Aviation. The analysis underscores the limits of norm development for emerging technologies with both civilian and military applications. It finds lessons for developing verifiable, international cooperation mechanisms for cyberwarfare in the regulatory model of international aviation. Conventionally, arms-control agreements take advantage of transparent tests or estimates of arms. To restrict cyberwarfare activities, experts and policy makers must adapt arms-control models to a difficult-to-measure technology at an advanced stage of development and use. Further investigation of international regulatory schemes for dual-use technology of similar diffusion and development to the internet, such as international civil aviation, is needed. 相似文献
79.
Nicholas G. Evans 《The Nonproliferation Review》2013,20(3-4):351-366
ABSTRACTScience and technology (S&T) review is key to anticipating developments in the life sciences that may benefit or run contrary to the aims of the 1972 Biological and Toxin Weapons Convention. It serves as a mechanism for both preparing against novel biological threats and identifying the best opportunities for developing and sharing the life sciences to the fullest extent. In the age of rapidly advancing biotechnology, S&T review needs to be wide ranging, involve a diverse set of inputs, and be transparent about its methods and data. This viewpoint considers four models of S&T review and their capacity to respond to the challenge of the life sciences: standing advisory boards; ad hoc working groups; peer review; and wikis. It then identifies a hybrid model that is suitably broad, diverse, and transparent. 相似文献
80.
分析了战时装备调配保障决策的特点,运用模糊聚类分析法对装备调配保障对象进行了分组和优先级排序,以此为基础,运用目标规划法构建了战时装备调配保障决策模型,最后,通过实例验证了模型的可行性和有效性. 相似文献