Results 81 to 90 of about 18,935 (224)
Rare Metals, EarlyView.ABSTRACT High‐entropy alloys (HEAs) have attracted considerable interest from researchers owing to their tunable chemical compositions, exceptional structural stability, and promising catalytic properties. However, their large‐scale application is often hindered by complex manufacturing techniques and poor durability.
Sheng Guo +9 more
wiley +1 more source
Dianci bileiqi, 2009 对热固性环氧树脂基复合材料的绝缘子承力杆件进行了分析,指出此种材质存在弹性模量低、耐热性差、易老化、力学性能的各相异性以及材料性能多呈分散性等缺点;尤其是存在水解现象。提出用高温硫化硅橡胶（HTV）作为基材,以缠绕方式和端部附件连接而成的芯体作为复合绝缘子受力杆件,直接承受拉力负荷。分析表明,将高温硫化硅橡胶为基材的复合绝缘子作承力杆件,可充分、有效地发挥玻璃纤维的承载能力,提高了各拉力等级的复合绝缘子承力杆件的可靠性、稳定性,克服了热固性环氧树脂基复合材料的缺点。
秦国富
doaj
Rare Metals, EarlyView.ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu +5 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2022 通过对3个12.9级高强度螺栓连接端板节点和1个10.9级高强度螺栓连接端板节点的拟静力试验，对节点的破坏模式、滞回性能、承载能力和耗能能力等滞回性能进行了对比分析。结果表明：12.9级高强度螺栓连接端板节点试件破坏时倾向于螺纹处发生脆性断裂，无明显塑性变形，而10.9级高强度螺栓连接端板节点试件在破坏时表现为受拉区螺栓脱扣；12.9级螺栓可以有效地延缓端板节点刚度的退化，同时提高节点的承载能力；使用12.9级高强度螺栓替代10.9级高强度螺栓能够提高节点的耗能能力 ...
杨俊芬 +5 more
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Interface Issues of Inorganic Solid‐State Electrolytes in Secondary Magnesium Batteries
Rare Metals, EarlyView.ABSTRACT Solid‐state magnesium batteries (SSMBs) have gained significant attention as promising candidates for next‐generation safe energy storage systems because of the abundance of magnesium (Mg) in the earth's crust, superior energy density, and inherent nonflammability.
Jiren Wang +9 more
wiley +1 more source
Shiyou jixie, 2014 弹性爪机构是海上完井滑套开关工具中最重要的部件，其力学性能稳定性对于作业成败至关重要。基于受力分析和有限元模拟，建立开关工具弹性爪力学理论模型和三维有限元分析模型，研究弹性爪结构应力分布与作业性能。基于受力理论分析可知，弹性爪机构最大轴向拉力为4 116 N，最大应力为675 MPa；基于有限元模拟计算，弹性爪机构最大轴向拉力为3 924 N，最大应力747 MPa，弹性爪结构强度满足要求。功能试验结果表明，理论计算方法存在一定的误差，有限元模拟结果相对比较精确和可靠 ...
刘传刚 +4 more
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Jianzhu Gangjiegou Jinzhan, 2021 冷弯薄壁型钢组合墙体主要由冷弯薄壁型钢骨架和外敷面板组成,结构轻巧,绿色环保,多用于中低层建筑,一般在施工现场拼装完成。为提升墙体的施工速度和安装效率,在墙体四周增设焊接刚性边框,提出一种新型装配式刚边框-冷弯薄壁型钢骨架组合墙体,该墙体在工厂预制完成,现场采用螺栓与周围构件连接。建立有限元模型分析面板类型、斜撑、螺钉间距、刚边框和洞口对该新型墙体受力性能的影响,提出了承载力设计方法。研究结果表明:增设斜撑能提升墙体骨架的抗侧刚度以及石膏板覆面墙体的受剪性能 ...
马杰, 王卫永, 邢永辉, 丁勇
doaj
Gallery structure design of one instructional laboratory building in one high school [PDF]
, 2007 通过对某中学教学实验楼连廊结构设计的介绍,重点讨论了连廊屋盖结构选型和优化分析以及特殊的支座处理方式,为同类建筑结构设计提供参考借鉴。According to the introduction of gallery structure design of one instructional laboratory building in one high school,it discusses the roof structure selection,optimum analysis and the ...
郭娟娟
core
On the Damage Tolerance of Diffusion Bonded Titanium–Aluminum Phase Biomimetic Composites
Rare Metals, EarlyView.ABSTRACT The biomimetic design principles of natural structures involve the strategic integration of stiff and compliant phases to synergistically enhance strength and toughness. Its evolutionary refined natural armor, characterized by a specialized microarchitecture, enables superior damage tolerance.
Shuai Tong +10 more
wiley +1 more source