A method for solving the contact problem for generic helical gear pairs (either external or inter- nal) is described. Gear profiles are obtained by means of numerical simulation of the cutting pro- cess and an accurate description is provided in terms of NURBS curves or surfaces. A new method for finding the enveloping profiles for a generic tool (e.g. from a measured topography) is pro- posed. The minimum number of parameters needed to describe the profile in the presence of tip and root reliefs, helix modification and crowning is discussed. A reference structured grid is de- fined on the tooth, then refinement criteria are applied in order to obtain accurate solutions in terms of tooth deflection, contact pressure and fillet stress. The method allows to automatically perform a Loaded Tooth Contact Analysis (LTCA) starting from the design data of a gear pair. Re- sults from the LTCA include contact pressure and contact pattern maps, as well as maximum fillet stress and fatigue strength. Combining several analyses within a mesh cycle, information about the Static Transmission Error (STE) and mesh stiffness is provided. The whole procedure has been implemented in a software called helical pair. A comparison with other approaches is given.

Adaptive grid-size finite element modeling of helical gear pairs / Barbieri, Marco; Zippo, Antonio; Pellicano, Francesco. - In: MECHANISM AND MACHINE THEORY. - ISSN 0094-114X. - STAMPA. - 82:(2014), pp. 17-32. [10.1016/j.mechmachtheory.2014.07.009]

Adaptive grid-size finite element modeling of helical gear pairs

BARBIERI, MARCO;ZIPPO, Antonio;PELLICANO, Francesco
2014

Abstract

A method for solving the contact problem for generic helical gear pairs (either external or inter- nal) is described. Gear profiles are obtained by means of numerical simulation of the cutting pro- cess and an accurate description is provided in terms of NURBS curves or surfaces. A new method for finding the enveloping profiles for a generic tool (e.g. from a measured topography) is pro- posed. The minimum number of parameters needed to describe the profile in the presence of tip and root reliefs, helix modification and crowning is discussed. A reference structured grid is de- fined on the tooth, then refinement criteria are applied in order to obtain accurate solutions in terms of tooth deflection, contact pressure and fillet stress. The method allows to automatically perform a Loaded Tooth Contact Analysis (LTCA) starting from the design data of a gear pair. Re- sults from the LTCA include contact pressure and contact pattern maps, as well as maximum fillet stress and fatigue strength. Combining several analyses within a mesh cycle, information about the Static Transmission Error (STE) and mesh stiffness is provided. The whole procedure has been implemented in a software called helical pair. A comparison with other approaches is given.
82
17
32
Adaptive grid-size finite element modeling of helical gear pairs / Barbieri, Marco; Zippo, Antonio; Pellicano, Francesco. - In: MECHANISM AND MACHINE THEORY. - ISSN 0094-114X. - STAMPA. - 82:(2014), pp. 17-32. [10.1016/j.mechmachtheory.2014.07.009]
Barbieri, Marco; Zippo, Antonio; Pellicano, Francesco
File in questo prodotto:
File Dimensione Formato  
46-Mech-Machine-Theory-Barbieri-Zippo-Pellicano-2014.pdf

non disponibili

Descrizione: Articolo originale
Tipologia: Versione dell'editore (versione pubblicata)
Dimensione 5.71 MB
Formato Adobe PDF
5.71 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/1079783
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 38
  • ???jsp.display-item.citation.isi??? 27
social impact