Results 91 to 100 of about 1,753,171 (302)

Machine Design Experiments Using Gears to Foster Discovery Learning [PDF]

open access: yes, 2015
Machine Design Experiments Using Gears to Foster Discovery Learning For the typical undergraduate engineering student the topic of gears is introduced and discussed in several courses.
Nagurka, Mark L.   +1 more
core   +1 more source

Optimization Design of 3Z(Ⅱ) Planetary Gear Train based on Parallel Selected Genetic Algorithm

open access: yesJixie chuandong, 2017
The optimization design method of 3Z( Ⅱ) planetary gear train is studied. The multiple object optimization model,whose objective functions are the minimum of volume of gear train and the maximum of transmission efficiency is built.
Zhang Qiang, Liu Zefeng
doaj  

Influence of Wheel Flat Scars on High-speed Train Transmission Geer Dynamic Characteristics

open access: yesChengshi guidao jiaotong yanjiu
Objective Wheel flat scars can exacerbate the vibration of train transmission gears. Therefore, it is necessary to study the impact of wheel flat scars on the vibrational dynamic characteristics of high-speed train transmission gears.
CHEN Guangyuan
doaj   +1 more source

The linear boom actuator designed for the Galileo spacecraft [PDF]

open access: yes, 1983
Because the linear boom actuator is to be used on a flight spacecraft, as opposed to a ground based application, there is a comprehensive set of requirements. First, of course, the actuator must be capable of positioning and holding the load.
Koch, E. F.
core   +1 more source

Impacts of Backlash on Nonlinear Dynamic Characteristic of Encased Differential Planetary Gear Train

open access: yesShock and Vibration, 2019
A multifreedom tensional nonlinear dynamic equation of encased differential planetary gear train with multibacklash and time-varying mesh stiffness was developed in the present research.
Z. Zhu, L. Cheng, Rui Xu, R. Zhu
semanticscholar   +1 more source

基于虚拟样机技术的行星轮系的动力学仿真研究

open access: yesJixie chuandong, 2006
The torsional vibration model of the planetary gear train has combined with the virtual prototype technology. The dynamics simulation of the planetary gear train is proceeded with by the model established.
张庆霞   +3 more
doaj  

Analysis of Gear Contact Stress of High-speed Train Gearbox

open access: yes机车电传动, 2019
The strength of the gear pair in the high-speed train gearbox is a key factor for the safe operation of the train, using China’s independent research and development high-speed train bogie gearbox gear as study object, three-dimensional gear system model
Hailong WANG, Linghui WEI, Canjiang YAO
doaj  

Experimental Study of the Influence of Speed and Load on Thermal Behavior of High-Speed Helical Gear Trains [PDF]

open access: yes
An experimental effort has been conducted on an aerospace-quality helical gear train to investigate the thermal behavior of the gear system as speed, load, and lubricant flow rate were varied.
Handschuh, R., Kilmain, C.
core   +1 more source

Polarizer mechanism for the space telescope faint object spectrograph [PDF]

open access: yes, 1983
The polarizer mechanism for the Space Telescope Faint Object Spectrograph is described. This device will allow spectropolarimetric measurements of faint astronomical objects. The mechanism employs a unique arrangement to meet functional requirements in a
Thulson, M. D.
core   +1 more source

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