ADVANCEMENT OF HELICAL GEAR DESIGN TECHNOLOGY

Abstract

An analytical and experimental study to evaluate factors for accurate appraisal of gear tooth bending strength is described. A design analysis consisting of a thorough review of current methods of calculating bending strength is presented. A dynamic test at high speed and an experimental evaluation of strain gage measured stresses are also presented for substantiation of the theoretical stress analysis. Results from a designed static fatigue test are presented to evaluate the effect of two geometric variables, i.e., pressure angle and helix angle, and two load positions. A final computer program is described to calculate bending stress as substantiated by design analysis, experimental evaluation, and static fatigue test. It is shown that the thorough consideration of geometric variables permits a more precise assessment of bending strength for life expectance of lightweight aircraft gearing.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1968
Accession Number
AD0675468

Entities

People

  • Terry A. Lyon
  • Wayne L. Mcintire

Organizations

  • General Motors

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Aircrafts
  • Bending Stress
  • Computer Programs
  • Dynamic Tests
  • Fatigue Tests (Mechanics)
  • Gear Teeth
  • Geometry
  • Manufacturing
  • Materials
  • Measurement
  • Mechanical Working
  • Mechanics
  • Statistical Tests
  • Strain Gages
  • Test And Evaluation
  • Yield Strength

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Systems Analysis and Design
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).