Results 11 to 20 of about 17,474 (298)

Gear Unit Housing Effect on the Noise Generation Caused by Gear Teeth Impacts

open access: yesStrojniški vestnik – Journal of Mechanical Engineering, 2012
The basic hypothesis of the paper is that machine part surfaces are membranes that divide inner and outer space, receive disturbance power from inner space and emit it to the surroundings. Additionally, machine systems operation causes numerous disturbances such as collisions, sliding, rolling, etc.
Ognjanović M., Ciric-Kostic, Snezana
openaire   +4 more sources

Simulation and Analysis of the Elliptical Gear Used in Rack Type Pumping Unit

open access: yesJixie chuandong, 2016
According to the geometric characteristics of the elliptical gear,with different eccentricity ratio of ellipse,the different transmission ratio curve is got,and then the variable speed motion of pumping unit is completed.
Tian Zhenzhen, Peng Yong, Zhang Haokun
doaj   +2 more sources

Mechanical Analysis and Kinematic Simulation of Reversing Mechanism for Gear Guide-rod Pumping Unit

open access: yesJixie chuandong, 2021
Aiming at the low stroke times motion characteristics badly of beam pumping units,a reversing mechanism for gear guide-rod pumping units is analyzed. The reversing mechanism is mainly composed of a long rod incomplete gear,a rack moving frame,a roller ...
Jun Shao   +3 more
doaj   +2 more sources

Optimization of energy efficiency and NVH behaviour of a helical gear unit

open access: yesMechanics & Industry
The goal of this study is to perform a multi-objective optimization of a gear unit in order to improve its performance in terms of mechanical power losses, gear dynamics and equivalent sound power radiated by the housing.
Ben Younes Emna   +4 more
doaj   +2 more sources

The Effect of Lubricant Viscosity Variation on Tooth Friction and Hence on the Energetic Behaviour of Gear Unit [PDF]

open access: yesChemical Engineering Transactions
Earlier this year, I created a mathematical model of a gear unit that allowed me to investigate the energy performance of a vehicle gear unit over its full operating range.
József Polák
doaj   +1 more source

Refining methods of vibration diagnostics of wear of turbo-prop engine differential speed reduction unit gear teeth

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2018
The paper presents results of complex research of vibration behavior of the differential reduction gear unit of a turboprop engine on the basis of statistics of products with repaired reduction gears and those placed under repair.
A. A. Avramenko   +4 more
doaj   +2 more sources

bkuczenski/scoping-gear-losses: PNAS submission

open access: yes, 2021
Simulation data and results for creating a bounding estimate of derelict fishing gear generation from industrial fisheries. We match vessel telemetry data from Global Fishing Watch with landings data from FAO to generalize the catch-effort relationship ...
Brandon Kuczenski
core   +1 more source

Adaptive Wavelet Transform Method to Identify Cracks in Gears

open access: yesEURASIP Journal on Advances in Signal Processing, 2010
Many damages and faults can cause problems in gear unit operation. A crack in the tooth root is probably the least desirable among them. It often leads to failure of gear unit operation. By monitoring vibrations, it is possible to determine the presence
Belsak Ales, Flasker Joze
doaj   +2 more sources

A Study on the Gear Tooth Micro-Geometry Optimization of Angle Drive Unit [PDF]

open access: yes한국정밀공학회지, 2018
Gears have been used as primary machine elements that comprise a power transmission system in many mechanical engineering fields. This paper presents research on the optimization of gear geometries.
Min Hyong Jeon   +4 more
doaj   +1 more source

A PID Control Method Based on Internal Model Control to Suppress Vibration of the Transmission Chain of Wind Power Generation System

open access: yesEnergies, 2022
Vibrations occur in the wind turbine drivetrain due to the drivetrain’s elasticity and gear clearance. Typically, the PID control method is used to suppress elastic vibration, while the method with the disturbance suppression function is used to suppress
Chenyang Zhou, Yanxia Shen
doaj   +1 more source

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