Results 31 to 40 of about 15,531 (185)
Rare Metals, EarlyView.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
Wet-towing coupled dynamic response of three-bucket jacket foundation of offshore wind power [PDF]
ObjectiveTo improve the safety of wet-towing transportation for offshore wind power multi-bucket jacket foundations, it is necessary to explore the stability and dynamic response during the wet-towing transportation.MethodsA hydrodynamic model was ...
Disheng LIANG, Puyang ZHANG, Xiling QI
core +1 more source
Rare Metals, EarlyView.ABSTRACT CoP has become a research hotspot for supercapacitor electrode materials because of its considerable theoretical capacitance and metalloid nature, but its commercial application remains hampered by structural instability and sluggish ion kinetics.
Gaoliang Wang +8 more
wiley +1 more source
Dianci bileiqi, 2019 1 000 kV避雷器高度高,荷载大,结构重要性高,在地震中易损性极高。基于ANSYS有限元软件,建立了基于土与结构相互作用的1 000 kV避雷器有限元模型,输入地震波进行动力时程响应分析。结果表明,考虑土与结构相互作用后,避雷器顶端位移、瓷套应力和倾覆力矩并不是随着土体剪切波速的减小一直增大或减小,当土体较硬时对地震动起放大作用,相应结构动力响应变大,当土体较软时对地震动起隔震作用,结构动力响应变小。
张富有 +3 more
doaj
On-line structural damage detection and its real-time integration with vibration control [PDF]
, 2015 建筑结构在服役期间，由于一些自然和人为的因素，往往会因为过大的变形给居住在其中的人们带来不适感，特别是当遭受一些重大荷载，如强烈地震作用时，结构很有可能会产生损伤，因此对结构损伤识别和振动控制的研究，是目前土木工程领域两个非常重要的课题。传统的方法大多是将结构损伤识别和振动控制分开进行研究，但是考虑到二者都同时用到相同的信号采集、传输和收集装置，这样分开处理的方式既不经济，计算效率也不高；同时，结构的最优控制也应该是在能够实时识别的结构时变参数的基础上实现的。 土木工程领域，考虑到其结构的复杂性 ...
周欢
core
Laser‐Driven Halide Exchange and High‐Resolution Multicolor Patterning of Perovskite Films
Rare Metals, EarlyView.ABSTRACT Translating the excellent properties of metal halide perovskites (MHPs) into practical flexible optoelectronic devices requires high‐resolution multicolor patterning techniques that are compatible with post‐fabrication processing. However, such a capability has remained elusive.
Shu Yang +6 more
wiley +1 more source
Dianci bileiqi, 2018 为研究复合材料支柱绝缘子的地震响应,本文对换流站用±1 100 kV复合支柱绝缘子进行了振动台试验,研究了该支柱绝缘子的动力特性,加速度响应,位移响应以及应力响应。试验结果表明:该支柱绝缘子的前三阶频率分别为0. 63 Hz、3. 90 Hz以及10. 75 Hz,阻尼比约为3. 7%。支柱绝缘子的加速度响应峰值、相对位移响应峰值以及根部应力响应峰值均随地震动峰值加速度的增大（0. 1～0.
刘海龙 +3 more
doaj
Dynamical Mechanisms of Upper Oceanic Response to Tropical Cyclones [PDF]
, 2017 海洋对热带气旋的响应和反馈机理是海洋与大气科学的研究热点，也是准确预报热带气旋强度和相关海洋环境变化的关键所在。本文结合现场观测、数值模拟和理论分析，着重研究上层海洋对热带气旋的响应特征和机制。首先采用2014年和2016年两组南海北部的浮标/潜标实测资料，针对几个过境的热带气旋（特别是台风海鸥）开展个例分析和数值模拟；在此基础上，再从理论上进一步探讨一般情况下海洋对热带气旋的动力学响应机制。 台风海鸥于2014年9月经过南海观测阵列上空，导致局地风速迅速增加并伴随着大气压强降低、路径右侧（左侧 ...
张翰
core
Rare Metals, EarlyView.ABSTRACT Harnessing solar energy for self‐heating presents an effective strategy to suppress surface ice formation. In this paper, we fabricated nano‐silver‐modified multilayer graphene sheets (Ag@MGs) that integrate photothermal and superhydrophobic properties for anti‐icing applications.
Yihan Zhang +7 more
wiley +1 more source
Shiyou jixie, 2015 为了研究J型铺设升沉运动对管道应力的影响，利用ABAQUS软件对管道进行有限元建模，分析了不同水深、铺管角度和管道容重下船体下方10 m和TDP附近管道的动态响应。建模时采用PSI单元模拟管道与海底土壤之间的相互作用，将土壤反力定义为非线性。分析结果表明，在船体升沉运动影响下，轴向张力的变化是导致管道应力变化的重要因素；TDP附近的应力变化不仅要考虑轴力变化，还要考虑弯矩变化；若以增大壁厚的方式增大容重，则管道抗弯刚度增大，尽管TDP处管道静态应力呈增大趋势，但最大动态应力相差不大 ...
焦晓楠 +5 more
doaj