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Teeth Wear Enhancement Along the Tooth Profile of Spur Gear Drive by Balancing the Fillet Stress Through Positive Correction Factor

  • R. RavivarmanEmail author
  • K. Palaniradja
  • R. Prabhu Sekar
Conference paper
Part of the Lecture Notes on Multidisciplinary Industrial Engineering book series (LNMUINEN)

Abstract

This article suggests a modification in the correction factor which will improve the wear resistance for the equalized fillet stress in spur gear drive. As ruled, higher transmission proportional drives have an altering stresses in the fillet of pinion and the wheel. This fillet stress can be equalized by utilizing addendum alteration system. This changed addendum can bring down the fillet stress in the pinion subsequently enhancing the load conveying limit of the drives. Here, the fillet stress is assessed utilizing finite element analysis (FEA) technique for various blends of S+ drives. This correction factor is given in the pinion; wheel with the end goal that the bending strength of the drive is improved. At last, the fillet stress is equalized by varying the correction factors for every one of these drives, and the upgraded estimation of balanced strength with enhanced wear resistance is recommended for the spur gear drive.

Keywords

Correction factor Finite element analysis Fillet stress Spur gear drive Wear 

Nomenclature

AD

Line of action of the contact in mm

E

Young’s modulus in GPa

F

Load in N

Jw

Wear coefficient in m2/N

N

Speed at input of the drive in rpm

ao

Center distance

b

Face width in mm

h

Teeth wear in mm

i

Transmission ratio

m

Module in mm

pb

Base pitch in mm

rap

Radius of addendum for pinion in mm

s

Sliding distance in mm

v

Sliding velocity in m/sec

\(x^{\prime}_{i}\) and \(y^{\prime}_{i}\)

Cartesian coordinates of worn tooth

X

Correction factor

Z

Teeth number

Symbols

Α

Pressure angle in degree

σH

Contact pressure in MPa

σt

Fillet stresses in MPa

\(\theta^{\prime}_{i}\)

Tooth thickness at contact in degree

Ν

Poisson’s ratios

Subscripts

N

Direction along normal of tooth surface

a

Addendum

b

Base circle

g

Gear

i

Point of contact at any instant

o

Pitch point

p

Pinion

max

Maximum

w

Working circle

References

  1. 1.
    Chernets, M.V., Yarema, R.Y., Chernets, Y.M.: A method for the evaluation of the influence of correction and wear of the teeth of a cylindrical gear on its durability and strength, Part 1. Service life and wear. Mater. Sci. 3, 289–300 (2012)Google Scholar
  2. 2.
    Gunay, D., Ozer, H., Aydemir, A.: The effects of addendum modification coefficient on tooth stresses of spur gear. Math. Comput. Appl. 1, 36–43 (1996)Google Scholar
  3. 3.
    Tunalioglu, M.S., Tuc, B.: Theoretical and experimental investigation of wear in internal gears. Wear 309, 208–215 (2014)CrossRefGoogle Scholar
  4. 4.
    Archard, J.F.: Contact of rubbing flat surfaces. J. Appl. Phys. 24, 981–988 (1953)CrossRefGoogle Scholar
  5. 5.
    Li, S.: Effects of misalignment error, tooth modifications and transmitted torque on tooth engagements of a pair of spur gears. Mech. Mach. Theory 83, 125–136 (2015)CrossRefGoogle Scholar
  6. 6.
    Prabhu Sekar, R., Muthuveerappan, G.: A balanced maximum root stresses on NCR spur gears to improve the load carrying capacity through non-standard gears. Mech. Based Des. Struct. Mach. 43, 150–163 (2014)CrossRefGoogle Scholar
  7. 7.
    Ravivarman, R., Palaniradja, K., Prabhu Sekar, R.: Evolution of balanced root stress and tribological properties in high contact ratio spur gear drive. Mech. Mach. Theory 126, 491–513 (2018)CrossRefGoogle Scholar
  8. 8.
    Andersson, S., Eriksson, B.: Prediction of the sliding wear of spur gears. In: Proceedings of NORDTRIB ’90 (1990)Google Scholar
  9. 9.
    Flodin, A., Andersson, S.: Simulation of mild wear in spur gears. Wear 207, 16–23 (1997)CrossRefGoogle Scholar
  10. 10.
    Thirumurugan, R., Muthuveerappan, G.: Maximum fillet stress analysis based on load sharing in normal contact. Mech. Based Des. Struct. Mach. 38, 204–226 (2010)CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringEaswari Engineering CollegeChennaiIndia
  2. 2.Department of Mechanical EngineeringMotilal Nehru National Institute of TechnologyAllahabadIndia

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