reference image used in the static structural analysis. I have carried out analysis in ANSYS for calculating the gear tooth deformation for various pitch line velocities. gear tooth is expanded/ deformed as shown below. Why the gear tooth is not having the same deformation across the face width...
The gear and pinion are running at high speeds and no-load condition.
are the pinion and gear tooth will have different expansions in radial direction?
I think, as the the gear is larger in size, the growth or expansion of the gear tooth is more than the pinion tooth.
if the expansion of the...
I have found some articles where the gear teeth temperature increases across the face width in helical gears. What are the reasons for increase in the temperature across the face width even though same amount of oil supplying? What methods can reduce the non-uniform temperature distribution?
The mineral oil is being supplied at 40 deg C, How to calculate flow rate, if the oil supply temperature is increased to 50 deg c and 60 deg C.
As the temperature increases, viscosity of the oil reduces. The specific gravity also reduces with temperature.
Q2/Q1 = (SG1/SG2)^(1/2)
flow rate of...
The ISO VG 32,46 and 68 oils are being used in gearboxes.
The gearboxes here specifying are high speed and high power gearboxes.
what is the maximum operating temperature of ISO VG 32 , 46 and 68 oils to have required viscosity to form sufficient film thickness between the meshing gears? if the...
Gears are rotating at higher pitch line velocity ( 100 m/s). How to calculate the gear tooth deformation due to rotational speed and centrifugal stress on gear tooth?
The gearbox with double helical gears are rotating at peripheral velocity of 80 m/s and the oil is supplied to the gears at the outmesh. The lubricantion oil ISO VG mineral oil. How to calculate the optimum gear mesh oil to the meshing area? How much is the bulk tooth temperature is allowable?
How much temperature of gear/pinion tooth will be increased from no-load (2 to 5% of full-load) to full-load in high speed gearbox? oils used are ISO mineral oil. How to calculate the rise in temperature from no-load to full-load?
How much gearbox power loss will increase from no-load to...
I have measured object temperature by setting emissivity in the infrared thermometer. How to calculate the temperature for the emissivity of 0.83
Emissivity/ "infrared Temperature (deg C)"
0.5 / 68.7
0.7 / 58.5
0.83 / -?
0.96 / 50.7
1 / 49.8
optimum tightening torque required for bolt under static and dynamic conditions
Bolt size: M30,
Material: AISI4340 alloy steel
Grade (property class): 12.9
All Bolt threads to be lubricated with MoS2 grease during torque tightening.
Temperature variations will not be there.
Bolts are not...
I would like to know the gear tooth temperature while the gears are running. I could not measure the temperature while gears are rotating.
I have measured gear tooth temperature after stopping the gears and cutting the lubricant oil (within 10 minutes ).
After stopping gearbox, the oil on gear...
I would like to know the tightening torque required for bolt in a coupling under static and dynamic conditions.
How to estimate the tightening torque for these two cases?
Kindly suggest
How to calculate teeth friction loss in helical gears? Could anybody please suggest highly reliable analytical or any other methods to calculate teeth friction loss? How to measure experimental teeth friction loss in helical gears?
Attempt has been made to measure the temperature of oil coming out of gear mesh. How to measure exact temperature of oil within the gearbox surrounded by air-oil mist?
I would like to measure gear tooth temperature while gears are rotating high speeds. What is best instrument to measure tooth temperature? How to measure the tooth temperature while gears running?
How to calculate teeth friction loss (mesh power loss) and windage power loss in double helical gears under oil jet lubrication? I have experimental data of total gearbox power loss and bearing power loss. How can I calculate the remaining power loss due to mesh and windage? Are there any...
