Tooth separation and wedging remain key concerns in planetary gears sets design. These may lead to anomalous in-service conditions and cause premature tooth damage and bearings failure. Damage is related to planets loads sharing which in turn depends on assembly errors and functional parameters of the used design solutions. This paper assesses the effects of the assembly errors and planets bearings clearance on the planets load sharing. The analysis focuses planetary gears sets used in wind power plants where these issues are particularly crucial. The effects of randomly distributed bearings clearances and misalignments are investigated using a simplified probabilistic approach. The study, carried out by means of a two-dimensional lumped-parameter model enabling both tooth separation and wedging, demonstrates a significant impact of the non uniform clearances distributions and assembly errors on the load sharing.

Analysis of the mechanical behaviour of planetary gears for power transmissions

MONELLI, BERNARDO DISMA;BARSANTI, MICHELE;BEGHINI, MARCO;CIULLI, ENRICO;
2015

Abstract

Tooth separation and wedging remain key concerns in planetary gears sets design. These may lead to anomalous in-service conditions and cause premature tooth damage and bearings failure. Damage is related to planets loads sharing which in turn depends on assembly errors and functional parameters of the used design solutions. This paper assesses the effects of the assembly errors and planets bearings clearance on the planets load sharing. The analysis focuses planetary gears sets used in wind power plants where these issues are particularly crucial. The effects of randomly distributed bearings clearances and misalignments are investigated using a simplified probabilistic approach. The study, carried out by means of a two-dimensional lumped-parameter model enabling both tooth separation and wedging, demonstrates a significant impact of the non uniform clearances distributions and assembly errors on the load sharing.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/822645
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact