The Prediction of Connecting Rod Fretting and Fretting Initiated Fatigue Fracture Dana Glacier Vandervell Bearings

Format:

Conference/Event

Author/Creator:

Merritt, David, author.

Conference Name:

2004 Powertrain & Fluid Systems Conference & Exhibition (2004-10-25 : Tampa, Florida, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2004

Summary:

The influence of big-end bore fretting on connecting rod fatigue fracture is investigated. A finite element model, including rod-bearing contact interaction, is developed to simulate a fatigue test rig where the connecting rod is subjected to an alternating uniaxial load. Comparison of the model results with a rod fracture from the fatigue rig shows good correlation between the fracture location and the peak Ruiz' criterion, rather than the peak tensile stress location, indicating the potential of fretting to initiate a fatigue fracture and the usefulness of the Ruiz' criterion as a measure of location and severity.The model is extended to simulate a full engine cycle using pressure loads from a bearing EHL analysis. A fretting map and a Ruiz' criterion map are developed for the full engine cycle, giving an indication of a safe Ruiz' level from an existing engine which has been in service for more than 5 years

Notes:

Vendor supplied data

Publisher Number:

2004-01-3015

Access Restriction:

Restricted for use by site license