Analysis of a surface crack in rolling bearings

• Autorzy: Bassani R. , Ciulli E. , Di Puccio F.
• Konferencja: Problems of Non-Conventional Bearing Systems, NCBS '99
• Języki publikacji: EN

Abstrakty

EN

Surface cracks may be detrimental in rolling bearings life. The paper present a linear elastic fracture mechanics approach, based in the weight function method for evaluating the stress intensity factors history during a load cycle. The real contact problem is simplified to a half-plane with an angled crack, and a load travelling over it, due to ehd or hertzian pressure distribution. Moreover the effect of a tractive force is also considered, with a friction coefficient equal to -0.05. The method is rather simple requiring only nominal stresses in the body, easily achievable also in an analytical form, e.g. Applying kolosov-muskhelishvili complex variable approach. Results show that hertzian and ehd pressure distribution causes similar stress intensity factors cycles, even if the first case crack propagation seems to be favoured.

Słowa kluczowe

EN

fatigue surface cracks; rolling bearing; weight functions; EHD lubrication

PL

wytrzymałość materiałów

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: Applied Mechanics and Engineering
• Rocznik: 1999
• Tom: Vol. 4, no spec.
• Strony: 305--310
• Opis fizyczny: Bibliogr. 12 poz., rys., wykr.

Twórcy

autor

Bassani R.

autor

Ciulli E.

autor

Di Puccio F.

• DIP. INGEGNERIA MECCANICA, NUCLEARE E DELLA PRODUZIONE, VIA DIOTISALVI 2, 56126 PISA ITALIA