On the Research of Extra Characteristic Frequencies in a Planetary Gearbox

Oussama Graja, Bacem Zghal, Kajetan Dziedziech, Fakher Chaari, Adam Jablonski, Tomasz Barszcz, Mohamed Haddar

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Gearboxes have been investigated and monitored for decades since they present one of the important transmission power systems which have been used in navy, air and automotive sectors. One of the most adopted one is the planetary gearbox since it has an important reduction ratio within compact space. The dynamic behaviour of a such one is very complicated because it possesses several gears in mesh and differs from other types of gearboxes by the fact that planet gears can occupy different positions in one period carrier rotation which leads to an important influence on the overall vibration signal acquired by a transducer mounted one the external housing. Consequently, in a measured vibration spectrum, the pass planet frequency component is identified and its energy level is considered only as the pass planet energy. However, there is another phenomenon that increases the level of the pass planet frequency component which is the disequilibrium phenomenon due to the rotation of planets. In this work, a comprehensive monitoring of a staged planetary gearbox is presented. The unbalance phenomenon is investigated in every stage. Then, an experimental validation is provided in order to support our hypothesis claiming that the disequilibrium phenomenon depends on the parity of the number of planets.
Original languageEnglish
Title of host publicationAdvances in Acoustics and Vibration II
Subtitle of host publicationProceedings of the Second International Conference on Acoustics and Vibration (ICAV2018), March 19-21, 2018, Hammamet, Tunisia
EditorsTahar Fakhfakh, Chafik Karra, Slim Bouaziz, Fakher Chaari, Mohamed Hadder
PublisherSpringer, Cham
Number of pages7
ISBN (Electronic)9783319946160
ISBN (Print)9783319946153, 9783030068851
Publication statusPublished - 4 Sep 2018
Externally publishedYes
Event2nd International Conference on Acoustics and Vibration - Hammamet, Tunisia
Duration: 19 Mar 201821 Mar 2018
Conference number: 2

Publication series

NameApplied Condition Monitoring
PublisherSpringer Cham
VolumeACM 13
ISSN (Print)2363-698X
ISSN (Electronic)2363-6998


Conference2nd International Conference on Acoustics and Vibration
Abbreviated titleICAV2018

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