A FRACTURE MECHANICS APPROACH TO ROLLING OR SLIDING WEAR PROBLEMS

F.J. Gómez Jiménez  J. Gil Sevillano       

Anales de la Mecánica de la Fractura, nº 1 . 1984 . Pág. 101 -101
Ver (.pdf): Anales01-019

Resumen: In many cases of rolling or sliding wear, the loss particles are thin lamellae. N.P.Suh and coworkers have rationalized this form of wear in the so-called 'delamination theory of wear' asswning the formation of particles causedby the subsurface growing of fatigue cracks under the alternating stresses derived from the repeated passage of contact asperitieso. The problem of prediction of wear rates, particle sizes, etc. can be tackled as a particularly complex problem of Fracture Meahanics. A researeh project about the wear of railway wheels, whose fatigue propagation characteristias have already thoroughfully studied in a separate program, is in aourse at CEIT, and experimental work is acomplemenied by a refinement of the development of the original delamination theory of wear. Stress intensity factors for subsurface cracks under different stress distributions and at different depths have been calaulated both by an alternate.. Method any by a finite element method. The calculation of those stress intensity factors were a necessary step for a quantitative application of the delamination theory of wear.

LocalizaciónSigüenza

CEIT (Centro de Estudios e Investigaciones Técnicas de Guipúzcoa) and Escuela Superior de Ingenieros Industriales de San Sebastián
CEIT (Centro de Estudios e Investigaciones Técnicas de Guipúzcoa) and Escuela Superior de Ingenieros Industriales de San Sebastián