Results 31 to 40 of about 349,097 (165)
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The rapid expansion of data‐intensive applications has highlighted the fundamental limitations of traditional CMOS‐based von Neumann architectures, particularly in terms of power efficiency, latency, and flexibility. Spin logic devices utilizing spin–orbit torque (SOT) present a promising pathway for nonvolatile, low‐power, and in‐memory ...
Ke‐Yi Wu +5 more
wiley +1 more source
Gaoya dianqi, 2014 提出一种真空断路器弹簧操动机构故障的分析方法。针对FZW型真空断路器的弹簧操动机构,用Solidworks实体造型软件建立了弹簧操动机构的三维实体模型。阐述了弹簧刚度系数和阻尼的确定方法,并确定了机构中的弹簧及其他构件的参数。最后对弹簧操动机构进行运动学仿真,从各主要构件的运动情况和受力情况中分析了弹簧操动机构可能出现的故障以及防范措施。结果表明,构建弹簧操动机构的实体模型进行运动仿真分析,可以为真空断路器的故障分析提供依据。
刘雪扬, 张文斌, 尹志宏
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Additive manufacturing, commonly referred to as three‐dimensional (3D) printing, provides the geometric freedom and multi‐material integration needed to build soft medical robots for minimally invasive interventions, prosthetics, and rehabilitation.
Yao Wang +5 more
wiley +1 more source
Gaoya dianqi, 2011 目前126 kV高压断路器大量配用CT20系列弹簧操动机构,产品运行可靠,用户评价良好。由于弹簧操动机构具有诸多优点,252 kV及以上高压断路器也在推广使用。在推广使用过程中,弹簧操动机构能否可靠性操作,将直接关系到产品在系统中的运行安全。笔者就CT20系列弹簧操动机构进行了仔细的研究分析,并利用ADAMS机械动力学仿真分析软件进行仿真计算,从计算结果可以看出,如果需要增加CT20弹簧操动机构的操作功,并且能保证产品的可靠性,则必须对相应弹簧操动机构的结构进行合理改进。按照上述方法 ...
苏菊芳 +4 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT With the continuous advancement of materials science and technology, the rare metal gallium has increasingly emerged as a promising alternative to the toxic metal mercury. Although existing research has predominantly focused on the high electrical conductivity and excellent deformability of liquid metal (LM), its intrinsic fluidic property ...
Feifan Guo +6 more
wiley +1 more source
Risk, Hazards &Crisis in Public Policy, Volume 16, Issue 3, September 2025.Abstract Norway's oil sector faces significant security challenges due to rapid technological advancements and heightened geopolitical tensions, particularly concerning threats from Russian drones. The sector maintains a vigilant approach, continually monitoring and adapting to evolving threats.
Riana Steen, Tommy B. Hansen
wiley +1 more source
Gaoya dianqi, 2015 为了简化高压真空断路器操动机构的结构并提高其工作可靠性,笔者对不同转子结构的真空断路器电机操动机构的动态特性进行了研究。建立了126 kV真空断路器操动机构的动态仿真模型,推导了驱动电机主轴侧的等效转动惯量、动态反力以及动触头行程与驱动电机转角的关系。依据上述分析并综合考虑绕组端部效应对电机启动过程的影响,采用场—路—运动耦合法对驱动电机在断路器分、合闸操作过程中的瞬态磁场和动态机械特性参数进行了仿真计算。结合仿真结果制成了永磁驱动电机样机,进行了操动机构与断路器联机试验试验。试验结果表明 ...
林莘, 马希志, 李昊旻
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Authoritarianism and the Emergence of Parallel State Dynamics: Evidence From the Syrian Earthquake
Digest of Middle East Studies, Volume 34, Issue 1, Winter 2025.ABSTRACT This article investigates the Syrian regime's strategic manipulation of the February 2023 earthquake to reaffirm its authority and maintain legitimacy. The regime's response to the disaster is analyzed to understand how authoritarian states leverage natural disasters for political gains. It argues that the Assad regime's survival is not merely
Rahaf Aldoughli
wiley +1 more source
, 2021 本发明属于轴承装配领域，具体地说是一种基于轴固定的轴承自动压装机组及其控制方法，轴承自动压装机组包括框架、安装在框架底座上的支撑台、安装于框架上的升降机构、安装于升降机构上的夹紧机构和压装机构，操作人员放好轴与轴承并启动设备后，升降机构下降，夹紧机构夹紧轴，由压装机构进行轴承内圈压装，之后夹紧机构松开轴，由压装机构进行轴承外圈压装。本发明实现轴承的自动压装，可保证轴承内圈与外圈同时压装到位，既减轻了操作者的劳动强度 ...
荣胜波 +5 more
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基于Adams的CT14型高压断路器弹簧操动机构动力学仿真分析
Gaoya dianqi, 2017 操作机构的动态特性是决定断路器分断性能的重要因素。将CT14型高压断路器弹簧操动机构总体模型导入Adams并进行了参数化设置,建立了弹簧操动机构的动力学仿真模型,并对弹簧操动机构动触头分合闸动作进行了动力学仿真分析,通过与实验数据进行了对比,验证了所建模型的准确性。利用该模型分析了凸轮—连杆机构初始位置、各部分摩擦系数、滚轮磨损等3种因素对弹簧操动机构动触头行程、速度、动作时间等的影响。分析结果可为该型高压断路器弹簧操动机构的优化设计、安装检修等提供参考。
郑欣 +6 more
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