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The influence of tooth pitting on the mesh stiffness of a pair of external spur gears

  • Xihui Liang
  • , Hongsheng Zhang
  • , Libin Liu
  • , Ming J. Zuo*
  • *Corresponding author for this work
  • University of Alberta
  • School of Mechatronics Engineering, Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Time-varying mesh stiffness is one of the main internal excitations of gear dynamics. With the growth of gear tooth fault, like pitting, cracking and spalling, the mesh stiffness amplitude changes and consequently the dynamic properties of the gear system change. This study is devoted to deriving equations of the mesh stiffness of a pair of external spur gears with tooth pitting. Different pitting severity levels are modeled. The influence of tooth pitting on the gear mesh stiffness is investigated. The relationship between pitting severity and mesh stiffness is established. The proposed method is validated to be effective in mesh stiffness evaluation by comparing with a finite element model.

Original languageEnglish
Pages (from-to)1-15
Number of pages15
JournalMechanism and Machine Theory
Volume106
DOIs
StatePublished - 1 Dec 2016
Externally publishedYes

Keywords

  • Dynamics
  • Finite element
  • Mesh stiffness
  • Pitting modeling
  • Potential energy method

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