Results 111 to 120 of about 4,748 (264)

Study on Flash Temperature of Swing Movable Teeth Transmission

open access: yes工程科学与技术, 2013
:According to the theory of swing movable teeth meshing,a calculation method of friction coefficient between swing movable teeth and the internal gear under elastohydrodynamic lubrication was studied by using the theories of Hertz contact and tribology ...
梁尚明, 张杰, 贺飞飞
doaj  

COFs on MOFs: Layer‐by‐Layer Synthesis of MOF@COF Nanoparticles with Synergistic Adsorption

open access: yesAdvanced Materials, EarlyView.
A layer‐by‐layer strategy enables the growth of crystalline covalent organic framework (COF) shells on metal–organic framework nanoparticles, creating core–shell structures with tunable porosity. Ordered interstitial mesopores are formed during shell growth, which are connected with the COF's intrinsic micropores, thereby enhancing water sorption. This
Ana Guillem‐Navajas   +11 more
wiley   +1 more source

无侧隙双滚子包络环面蜗杆传动的啮合性能分析

open access: yesJixie chuandong, 2009
Based on the space engagement theory,the meshing function of the non-backlash hourglass worm gearing,the tooth surface equations of worm and the contacting line equation of worm gear are established.
王凯, 王进戈, 邓星桥
doaj  

Tough, Ductile, and Strong Hard‐Soft Cementitious Composite Enabled by Multi‐Material Additive Manufacturing

open access: yesAdvanced Materials, EarlyView.
Drawing inspiration from the layered hard‐soft architecture found in sea sponges, this work establishes a new framework for architected cementitious composites (ACC) through multi‐material additive manufacturing (MMAM) process. The integration of mortar and elastomer phases into layered architectures enables synergistic toughening mechanisms, including
Aimane Najmeddine   +5 more
wiley   +1 more source

Finite Element Contact Analysis of the Roller Enveloping End Face Engagement Worm Drive

open access: yesJixie chuandong, 2018
Based on the meshing theory of the roller enveloping end face engagement worm drive and the contact finite element analysis method,the finite element analysis software of ANSYS is used to establish the finite element analysis model of the roller ...
Wang Kai, Wang Jueling, Wang Liwei
doaj  

Polymorph‐Specific Electronic Transduction in WO3 during Molecular Sensing

open access: yesAdvanced Materials, EarlyView.
Metal‐oxide polymorphs with similar surface chemistry can nevertheless exhibit distinct sensing properties. In γ‐ and ε‐WO3, analyte adsorption appears comparable; yet, only ε‐WO3 induces a pronounced lattice electronic perturbation that accommodates charge in sub‐conduction band minimum states.
Matteo D'Andria   +6 more
wiley   +1 more source

One‐Dimensional Materials Supported in Two‐Dimensional Van der Waals Metal–Organic Frameworks with Optical Anisotropy Switching via Twist‐Engineering

open access: yesAdvanced Materials, EarlyView.
We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti   +12 more
wiley   +1 more source

Incomplete Meshing Interference and Morphology of New Tooth Profile of Double Helical Synchronous Belt

open access: yesJixie chuandong, 2016
Comparing with straight tooth synchronous belt,the double helical synchronous belt has the characteristics of high transmission accuracy,low noise,smooth running.
Guo Jianhua   +3 more
doaj  

Evidence for Itinerant Ferromagnetic Flat Bands Producing Large Transverse Responses

open access: yesAdvanced Materials, EarlyView.
Itinerant ferromagnetic flat bands are demonstrated in GdCo5 with a high Curie temperature of 940K, a stacked honeycomb–kagome lattice, through angle‐resolved photoemission spectroscopy and magneto‐thermoelectric measurements. These topological flat bands generate large Berry curvaturte, producing gigantic anomalous Nernst effect with record‐high ...
Susumu Minami   +15 more
wiley   +1 more source

影响滚珠型弧面凸轮分度机构啮合效率的分析研究

open access: yesJixie chuandong, 2012
According to the relative motion relationship of the steel ball,the cam and the ball socket of the index plate,the theory computing method of the meshing efficiency for the globoidal indexing cam with steel ball is deduced.By the numerical method,the ...
闫华明
doaj  

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