Results 31 to 40 of about 15,214 (117)

钢管混凝土柱T形件连接的抗拉承载力研究

open access: yesJianzhu Gangjiegou Jinzhan, 2015
T形件是钢管混凝土框架梁柱半刚性连接节点的重要组件,其抗拉承载力计算会影响到梁柱节点的抗弯承载力计算。根据欧洲规范的EC 3组件法,总结了T形件的3种塑性失效模式,并提出了钢管混凝土柱T形件各部件承载力计算方法。根据不同的失效模式和屈服线理论,确定了矩形或弧形端板控制的T形件抗拉承载力计算公式,利用柱腹板壁约束简化模型和柱壁破坏机制确定了柱翼缘壁控制的T形件抗拉承载力计算公式。采用算例说明其计算过程和计算精度。通过试验验证了所提钢管混凝土柱T形件连接的抗拉承载力计算方法的准确性。
黄春晓   +3 more
doaj  

Light‐Synergistic Enhanced Synaptic Devices Toward Superadditive In‐Sensor Computing

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Conventional neuromorphic devices face challenges in achieving efficient integration of light sensing and synaptic computation because of structural and material limitations. In this work, we developed an indium‐tin‐zinc oxide/transparent gelatin electrolyte synaptic transistor incorporating rare metal indium.
Wei Zhong   +16 more
wiley   +1 more source

摆线钢球行星传动接触疲劳强度研究

open access: yesJixie chuandong, 2000
依据弹性力学赫兹应力理论 ,提出了摆线钢球行星传动的受力模型。借助计算机辅助分析 ,导出了摆线钢球行星传动接触受力计算公式 ...
周建军, 陈子辰
doaj  

基于图模型的电力系统碳流计算优化研究

open access: yes大数据
首先介绍了图数据模型、图数据库和图计算的基本原理,包括图数据库的数据模型、查询语言以及常见图计算方法等。然后详细阐述了电力系统的图数据模型构建方法,将系统组件表示为节点,组件间关系表示为边。最后设计了碳流计算的图算法流程,利用AtlasGraph图数据库及图计算组件进行碳流传递迭代计算。该方法充分利用图数据库和图算法的优势,实现了对电力系统碳流的精确高效计算。该研究为电力系统碳排放的监测、分析和优化提供了有力支持,对于推动电力系统绿色低碳发展具有重要意义。
朱广新, 周春雷, 李俊妮, 宋继勐, 史昕, 沈子奇
doaj   +1 more source

Co‐Optimization of Mechanical Performance and Osseointegration of Titanium‐Based Composites via a Novel Microwave‐Driven Boronization Strategy

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT The use of Ti6Al4V alloy in dental implantation is constrained by its high elastic modulus and biological inertness, which lead to delayed osseointegration and a high failure risk. Additionally, its chemical incompatibility with hydroxyapatite (HA) impedes the development of stable bioactive composites.
Shangyong Zuo   +8 more
wiley   +1 more source

Colloid‐Mediated Surface Reconstruction Through High‐Valence Element Integration Enables Stabilized Oxygen Redox and Fast Interfacial Kinetics in Li‐Rich Cathodes

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Lithium‐rich manganese‐based cathodes (LRM) deliver high discharge capacities beyond 250 mAh g−1, but their practical deployment is restricted by irreversible oxygen redox, structural reconstruction, sluggish kinetics and unstable cathode‐electrolyte interfaces (CEI). Here, we develop a colloid‐assisted anchoring‐diffusion engineering strategy
Jia‐Nan Hao   +13 more
wiley   +1 more source

电力系统分析中的计算方法

open access: yesGaoya dianqi, 2018
大规模电力系统的规划、设计、运行和控制涉及到大量的计算问题。本书将应用于电力系统的各种数值计算方法进行了总结,是目前国际上唯一一本专门讲述电力系统计算方法的书。译者从事电力系统领域的教学和科研工作多年,承担过"计算方法"和多门电力系统领域课程的讲授,深深感到,一方面,透彻掌握电力系统规划、设计、运行和控制的相关理论,开发或熟练应用电力系统分析软件 ...
Mariesa L.Crow, 徐政
doaj  

Amino‐Functionalized Mesoporous SiO2 Hollow Nano‐Doughnuts for Enhanced Gas Adsorption and Specific Foodborne Pathogen Recognition in Point‐of‐Care Detection

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Developing rapid, precise gas sensors for Listeria monocytogenes (LM) biomarker detection faces challenges due to suboptimal gas‐solid interactions. Herein, we report the rational synthesis of amino‐functionalized mesoporous SiO2 hollow nano‐doughnuts (MS‐2‐NH2‐2) via modification with (3‐aminopropyl) trimethoxysilane (AAPTMS), which enables ...
Xingyu Wang   +7 more
wiley   +1 more source

Tuning Grain Boundary Carbides via Solute Rare‐Earth Elements to Prevent Intergranular Brittle Fracture

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Carbides strengthen the grain boundaries; nevertheless, excessive carbide precipitates embrittle the grain boundaries of high‐temperature alloys during prolonged service. Here, we provide direct evidence of solute rare‐earth atoms and demonstrate that they can trap vacancies and inhibit interstitial diffusion, restraining carbide precipitation
Jiali Zhang   +10 more
wiley   +1 more source

自由飞行空间机器人捕捉运动目标的力矩控制算法及其仿真

open access: yesJixie chuandong, 1999
研究了自由飞行空间机器人(FFSR) 捕捉运动目标的力矩控制算法及其仿真。在建立计算FFSR关节驱动力矩的求解算法的基础上,结合基于广义雅可比矩阵的分解运动速度控制法,提出了一种捕捉运动目标的力矩控制算法;并且计算机仿真验证了所提出算法的有效性。
李华忠, 洪炳熔
doaj  

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