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The Influences of Vibration Impact and Variable Entrainment Velocity on the EHL of Gear

Author: ShiGaoWei
Tutor: WangYouQiang
School: Qingdao Technological University
Course: Mechanical Design and Theory
Keywords: Impact load Variable entrainment speed Normal vibration Involute spur gear Time-varying thermal EHL Arc gear
CLC: TH117.2
Type: Master's thesis
Year: 2010
Downloads: 41
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Abstract


This paper is to consider the impact loads to the effects of vibration and start braking process entrainment speed changes and other factors on the involute straight tooth cylindrical gear non-Newtonian fluid gets hot elastohydrodynamic lubrication , and obtained a thermal EHL numerical solution , the numerical analysis of the isothermal EHL also arc gear . Specifically includes four parts : the shock load involute spur gear transient non- Newtonian Thermal EHL ; of variable entrainment speed spur gear hot mixed lubrication ; tooth surface normal vibration of gear unsteady the influence of the thermal EHL the arc gear isothermal EHL numerical analysis . First, according to the relationship between geometry and movement involute spur gear , thermal EHL model of involute spur gear non-Newtonian time-varying application multigrid technique , considering the radius of curvature of the gear mesh point , volume suction speed , impact load, lubricant viscosity and density , as well as the impact of the oil film temperature rise , has been completely numerical solution the impact loads involute spur gear Nie Nie into the whole process of time-varying thermal EHL . Secondly , obtained a the entrainment speed time-varying heat spur gear mixed lubrication numerical solution , and analyze the impact of the gear lubricant film shape and pressure in the braking process of the different acceleration starting and deceleration , time-varying effects lubrication performance . Again, consider change effects gear vibration EHL model change gears to the effect of vibration when Thermoelastohydrodynamic numerical solution is obtained , and the analysis of the vibration frequency and environment viscosity on the pressure and film thickness as well as temperature impact. Finally, the arc gear EHL numerical analysis , the single arc gear transmission equivalent line contact problem using multigrid obtained by the numerical solution of the isothermal elastohydrodynamic lubrication , and by the amount of the various parameters change, the comparison of the parameters of the different operating conditions the amount of the oil film pressure and the film thickness .

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanics (mechanical design of the basic theory ) > Mechanical friction, wear and lubrication > Lubricating
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