Results 51 to 60 of about 18,390 (212)
Jianzhu Gangjiegou Jinzhan, 2023 为提高整体式桥的梁台结合部抗裂性能与施工便利性，提出一种新型整体式桥台与组合梁结合部构造。采用ABAQUS通用分析软件，考虑钢混界面摩擦滑移效应，建立整体式桥台与组合梁结合部的三维有限元模型。通过仿真计算得到整体式桥台与组合梁结合部的破坏形态与荷载-挠度曲线，分析其极限承载力与传力机理，并与模型试验结果进行对照验证。进一步通过参数化计算分析，得到混凝土强度、钢材强度、钢板厚度与腹板形式对梁台结合部承载性能的影响。研究结果可为整体式桥梁及类似结构的研究提供参考。
范慧敏 +4 more
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Rare Metals, EarlyView.ABSTRACT The development of high‐performance electromagnetic protection materials integrating broadband absorption and effective shielding capabilities is hindered by challenges in simultaneously optimizing multiple electromagnetic properties through conventional material designs.
Changlong Du +9 more
wiley +1 more source
MXene‐Based Electromagnetic Attenuation Materials in Microwave and Terahertz Bands
Rare Metals, EarlyView.ABSTRACT MXenes exhibit considerable potential for developing high‐performance electromagnetic (EM) shielding and absorption materials operating across microwave and terahertz frequencies, due to their tunable surface chemistry and exceptional charge carrier transport properties.
Guozheng Zhang +9 more
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Rare Metals, EarlyView.ABSTRACT Organic‐inorganic metal halide perovskite solar cells (PSCs) are promising for photovoltaics due to their excellent optoelectronic properties. However, achieving high efficiency and stability remains challenging, mainly due to defects and energy losses at the electron transport layer (ETL)/perovskite interface.
Jiahui Jin +8 more
wiley +1 more source
Gaoya dianqi, 2018 为满足变压器式可控电抗器（controllable reactor of transformer type,CRT）"高阻抗、弱耦合"的设计要求,结合磁集成技术,提出一种结构更为简单、对制作工艺要求更低的CRT实用化本体结构。该结构通过在工作绕组与控制绕组间设置漏磁铁心,使变压器与限流电抗集成在一起构成一个具有"高阻抗"的基本独立单元。将这样多个基本独立单元组合并联构成CRT本体,可实现"弱耦合"。根据对基本独立单元的磁路分析,推导出工作绕组电流的一般表达式以及建立其等效电路,并以实验室样机制作为对象 ...
付鹏宇, 田铭兴, 张宁
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Jianzhu Gangjiegou Jinzhan, 2023 从材料力学原理出发，基于剪力互等定理和轴压构件的二阶弯曲效应，结合十字形双组合角钢构件受压时的实际破坏形态，推导了十字形双组合角钢构件填板连接的理论计算方法，给出了填板连接的一般设计方法；并结合试验结果论证了传统算法的局限性，确定了不同填板布置形式时填板处十字形截面的剪力不均匀分布系数；理论计算方法考虑了十字形双组合角钢构件不同失稳模式的影响，与试验结果相比，其安全裕度在10%以上，较传统算法具有较大的优越性，能够满足输电塔结构设计的一般要求；最后通过精细化数值分析验证了计算方法的准确性和可靠性 ...
何松洋 +5 more
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Rare Metals, EarlyView.ABSTRACT Transition metal‐based amorphous/crystalline (a/c) heterostructured catalysts have garnered significant attention due to their exceptional activity, stability, and cost‐effectiveness. However, the precise synergistic regulation of interfacial composition and phase states remains challenging.
Haoran Li +3 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT Diffusion bonding (DB) of near‐α titanium alloys requires high temperatures, which can cause grain coarsening, structural deformations, and degradation of the workpiece's mechanical characteristics. In this study, thermal hydrogen processing (THP) was applied to Ti65, combined with selective magnetron sputtering of a Ti‐Al thin film to promote
Liang‐Wei Kang +9 more
wiley +1 more source
Automatic Grid Generation of CAD for Gear Reducer Housing
Jixie chuandong, 1994 本文针对齿轮减速机ＣＡＤ过程中箱体类复杂板块组合结构有限元强度分析的特点，提出了基于等参数变换法的三维有限元组合网格自动生成方法，其特点是可将大型复杂结构自动离散为不同单元组成的网格，且可避免过渡单元，特别适用于复杂板块组合结构的有限元分析。
程燕青
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Advances in Elemene Nanodelivery Systems: From Material Design to Disease Treatment
Rare Metals, EarlyView.ABSTRACT Elemene (ELE) is a bioactive sesquiterpenoid extracted from traditional Chinese herbs, demonstrating broad‐spectrum antitumor, anti‐inflammatory, and analgesic properties with significant therapeutic potential. However, its clinical utility is constrained by inherent physicochemical limitations, including volatility and hydrophobicity, which ...
Xiao Wang +9 more
wiley +1 more source