Results 51 to 60 of about 52,719 (329)

Universal Mathematical Model and Tooth Flank Comparison of Spiral Bevel Gear and Cycloid Bevel Gear

open access: yesJixie chuandong, 2016
Aiming to the spiral bevel gears and cycloid bevel gears,the universal mathematical model is established,and the tooth flank geometry comparison is carried out.
Nie Shaowu   +3 more
doaj  

Generation of spiral bevel gears with zero kinematical errors and computer aided tooth contact analysis [PDF]

open access: yes
Kinematic errors in spiral bevel gears are a major source of noise and vibrations in transmissions. A method for the generation of Gleason's spiral bevel gears which provides conjugated gear tooth surfaces and an improved bearing contact was developed. A
Coy, J. J.   +3 more
core   +1 more source

Concentric differential gearing arrangement [PDF]

open access: yes, 1974
Two input members and two concentric rotatable output members are interconnected by a planetary gear arrangement. The first input drives directly the first output. The second input engages a carrier having the planetary gears affixed thereto. Rotation of
Gerdts, J. C., Zeiger, R. J.
core   +1 more source

Silver‐Alloyed Wide‐Bandgap (Ag,Cu)(In,Ga)S2 Thin‐Film Solar Cells With 15.5% Efficiency

open access: yesProgress in Photovoltaics: Research and Applications, EarlyView.
This study reports improvements in compositional homogeneity, microstructure, enhanced radiative recombination, and extended carrier lifetime of CIGS absorber via Ag incorporation. The optimal Ag‐alloyed CIGS solar cells achieve 15.5% PCE and 948 mV VOC, competing with the VOC of the Ag‐free reference sample from the same batch.
Yucheng Hu   +16 more
wiley   +1 more source

用中心投影法作直齿圆锥齿轮的仿真模型

open access: yesJixie chuandong, 2010
In order to establish the straight bevel gear sketches and simulation model database,the straight bevel gear profile involute mathematical model is established,and a bevel gear tooth involute profile of the spherical projection formed into the circle ...
胡志勇, 张国兴, 刘海, 刘长增
doaj  

Modeling and Flexible Body Dynamics Analysis of Hemispherical Bevel Gears

open access: yesJixie chuandong, 2022
In order to explore the influence of the variation of hemispherical bevel gear parameters on the dynamic characteristics of the system, a dynamic model of the hemispherical bevel gear pair is established based on the lumped mass method.
Wang Baichao   +6 more
doaj  

Ideal spiral bevel gears: A new approach to surface geometry [PDF]

open access: yes
The fundamental geometrical characteristics of spiral bevel gear tooth surfaces are discussed. The parametric representation of an ideal spiral bevel tooth is developed based on the elements of involute geometry, differential geometry, and fundamental ...
Coy, J. J., Huston, R. L.
core   +1 more source

How does leaf age affect performance? A comparative study of essential oils from young and mature Eucalyptus globulus leaves in crop protection

open access: yesPest Management Science, EarlyView.
Leaf age influences metabolomic profiling but not bioactivity of Eucalyptus globulus essential oils. Leaf age affects volatile levels of young and adult E. globulus oils, but not their bioactivity. Young leaf essential oil had higher contents of α‐ and β‐pinene. AEEO had higher levels of 1,8‐cineole and trans‐pinocarveol.
Mafalda Pinto   +11 more
wiley   +1 more source

Phase-angle controller for Stirling engines [PDF]

open access: yes, 1980
An actuator includes a restraint link adapted to be connected with a pivotal carrier arm for a force transfer gear interposed between the crankshaft for an expander portion of a Stirling engine and a crankshaft for the displacer portion of the engine ...
Mcdougal, A. R.
core   +1 more source

Efficient Harvesting of Irregular and Low‐Frequency Mechanical Energy via Hybridized Electromagnetic‐Triboelectric Systems

open access: yesSmall, EarlyView.
ABSTRACT The rapid expansion of the Internet of Things (IoT) and wearable electronics necessitates sustainable power sources to replace the limited electrochemical battery. While mechanical energy harvesting offers a promising solution, traditional harvesters face challenges of irregular and low−frequency environmental sources. This review presents the
Yongbin Han   +2 more
wiley   +1 more source

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