Abstract
Some terrible disasters of aircrafts were caused by inadequate lubrication or interruption of lubricant delivery of the gas turbine engine mainshaft bearings. This paper introduces the design of the test equipment, performs the experiments of failure performance for 51306 coated bearings to respond to oil interruption under the actual situation. The main failure performance of test coated bearings has been demonstrated to be the cage damage of the test coated bearing. The failure mechanism model of the damaged cage of test coated bearings under oil interruption condition is established for the failure analysis of damage cages. The failure mechanism of the damaged cages is revealed. The main reason for the damages of test coated bearing cages under lubricant interruption condition is that the perpendicular component force acted on the cage increases continually to go with the increase of the friction force between the balls and the cage due to inadequate lubrication until the cage is broken.
Publisher
Trans Tech Publications, Ltd.
Reference11 articles.
1. G. Hamburg, P. Cowley, and R. Valori, Operation of an all-ceramic mainshaft roller bearing in a J-402 gas-turbine engine, Lubrication Eng. Vol. 37 (7), p.407–415, July (1981).
2. Berkovits, Estimation of loads causing fatigue failures in accident investigations, Engineering Failure Analysis, Vol. 2(3), pp.215-226, (1995).
3. A. Tauqir, I. Salam, A. Haqul, and A. Q. Khan, Causes of fatigue failure in the main bearing of an aero-engine, Engineering Failure Analysis, Vol. 7(2), pp.127-144, (2000).
4. A. Salam, A. Tauqir, Ul Haq and A. Q. Khan, An air crash due to fatigue failure of a ball bearing, Engineering Failure Analysis, Vol. 5(4), pp.261-269, (1998).
5. J.V. Poplawski, D.R. Atwell, M.J. Lubas and V. Odessky, Predicting steady-state temperature, life, skid, and film thickness in greased preloaded hybrid ball bearing, J. Eng. Gas Turbines Power, Trans. ASME vol. 118, p.443–452, (1996).
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献