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Shaft-hub press fit
subjected to couples and radial forces: analytical evaluation
of the shaft-hub detachment loading
Enrico Bertocchi, Luca Lanzoni, Sara Mantovani, Enrico Radi and Antonio Strozzi |
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Vol. 13 (2018), No. 3, 283–296
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Abstract |
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A shaft-hub press fit subjected to two non-axisymmetric loading conditions is examined and the situation of incipient detachment between the shaft and the hub is determined. The first condition consists of a central radial load applied to the hub, balanced by two lateral forces applied to the shaft at a distance from the hub lateral walls. In the second condition, a central couple is applied to the hub, and it is balanced by two lateral opposite loads withstood by the shaft at a distance from the hub lateral walls. The shaft-hub contact is modelled in terms of two elastic Timoshenko beams connected by distributed elastic springs (Winkler foundation), whose constant is analytically evaluated. Based upon this enhanced beam-like modelling, the loading inducing an undesired shaft-hub incipient detachment is theoretically determined in terms of the shaft-hub geometry, of the initial shaft-hub interference, and of the elastic constants. Finite element forecasts are presented to quantify the error of this beam-like approximate analytical approach. |
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Keywords
press fit, incipient detachment, analytical solution,
Winkler foundation, finite elements
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Milestones
Received: 20 November 2017
Revised: 26 April 2018
Accepted: 30 April 2018
Published: 31 August 2018
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Authors |
| Enrico Bertocchi | |
| DIEF-Dipartimento di Ingegneria Enzo
Ferrari Università di Modena e Reggio Emilia Via Pietro Vivarelli 10 41125 Modena Italy |
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| Luca Lanzoni | |
| DIEF-Dipartimento di Ingegneria Enzo
Ferrari Università di Modena e Reggio Emilia Via Pietro Vivarelli 10 41125 Modena Italy |
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| Sara Mantovani | |
| DIEF-Dipartimento di Ingegneria Enzo
Ferrari Università di Modena e Reggio Emilia Via Pietro Vivarelli 10 41125 Modena Italy |
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| Enrico Radi | |
| DISMI-Dipartimento di Scienze e
Metodi dell’Ingegneria Università di Modena e Reggio Emilia Via Amendola, 2 42122 Reggio Emilia Italy |
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| Antonio Strozzi | |
| DIEF-Dipartimento di Ingegneria Enzo
Ferrari Università di Modena e Reggio Emilia Via Pietro Vivarelli 10 41125 Modena Italy |
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