Clearance influence on vibrations of gear systems

Ido Dadon, Jacob Bortman, Renata Klein, Michael G. Lipsett

Research output: Contribution to conferencePaperpeer-review


Discontinuity contact in gear transmissions occurs primarily from the presence of clearance between meshing teeth. The gap between the width of a tooth space (the space between two subsequent teeth) and the thickness of the engaging tooth is called backlash. The main goal of this research is to develop an algorithm for detection backlash based on vibration signatures. Currently, such an algorithm does not exist. This paper presents the evolution of an existing dynamic model of gear interaction. The model describes the dynamic behavior of a gear system, which has been extended to include clearance between the gear teeth. Damping increase arising as a result of oil-film in the gap between two teeth of a meshing gear is also taken into account. In this study, the modeling principles of backlash in the interaction between a gear pair are presented. The nonlinear influence of backlash on the vibration of a loaded gear system at different operating conditions is examined. An analysis is performed using dynamic model simulations conducted with different backlash levels at different load and speed conditions. In addition, a case that combines a localized fault was simulated in order to examine the dynamic response of the gear system in the presence of backlash.

Original languageEnglish
Number of pages14
StatePublished - 1 Jan 2018
Event58th Israel Annual Conference on Aerospace Sciences, IACAS 2018 - Tel-Aviv and Haifa, Israel
Duration: 14 Mar 201815 Mar 2018


Conference58th Israel Annual Conference on Aerospace Sciences, IACAS 2018
CityTel-Aviv and Haifa

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science


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