Optimizing involute gear design for maximum bending strength and equivalent pitting resistance

V. Spitas, C. Spitas

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Standard involute gear designs dominate high-power transmission applications because they combine sufficient bending strength with high pitting resistance, while retaining an adequate contact ratio. In this paper, a non-standard, optimal alternative involute gear design has been presented, which has the same pitting resistance as the standard involute gears but exhibits maximum resistance to bending. The optimization procedure is based on the complex algorithm, where the root stress, as calculated through tabulated boundary element analysis values, is the objective function and the active constraints include all of the kinematical, manufacturing and geometrical conditions, which must be satisfied by the optimal design, including the pitting resistance. The results indicate that optimal designs can achieve up to 8.5 per cent reduction of the fillet stress. Two-dimensional photoelasticity was used to verify the optimization results.

Original languageEnglish
Pages (from-to)479-488
Number of pages10
JournalProceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
Volume221
Issue number4
DOIs
Publication statusPublished - Apr 2007
Externally publishedYes

Fingerprint

Pitting
Bending strength
Gears
Photoelasticity
Value engineering
Power transmission
Optimal design

Keywords

  • Bending strength
  • Boundary element analysis
  • Contact pressure
  • Optimization
  • Photoelasticity
  • Pitting resistance
  • Spur gears

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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abstract = "Standard involute gear designs dominate high-power transmission applications because they combine sufficient bending strength with high pitting resistance, while retaining an adequate contact ratio. In this paper, a non-standard, optimal alternative involute gear design has been presented, which has the same pitting resistance as the standard involute gears but exhibits maximum resistance to bending. The optimization procedure is based on the complex algorithm, where the root stress, as calculated through tabulated boundary element analysis values, is the objective function and the active constraints include all of the kinematical, manufacturing and geometrical conditions, which must be satisfied by the optimal design, including the pitting resistance. The results indicate that optimal designs can achieve up to 8.5 per cent reduction of the fillet stress. Two-dimensional photoelasticity was used to verify the optimization results.",
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