Open AccessReliability and Random Lifetime Models of Planetary Gear Systems
Author(s) -
Peng Gao,
Liyang Xie,
Wei Hu
Publication year - 2018
Publication title -
shock and vibration
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 45
eISSN - 1875-9203
pISSN - 1070-9622
DOI - 10.1155/2018/9106404
Subject(s) - randomness , reliability (semiconductor) , monte carlo method , redundancy (engineering) , reliability engineering , engineering , computer science , mathematics , physics , statistics , power (physics) , quantum mechanics
Conventional reliability models of planetary gear systems are mainly static. In this paper, dynamic reliability models and random lifetime models of planetary gear systems are developed with dynamic working mechanism considered. The load parameters, the geometric parameters, and the material parameters are taken as the inputs of the reliability models and the random lifetime models. Moreover, failure dependence and dynamic random load redistributions are taken into account in the models. Monte Carlo simulations are carried out to validate the proposed models. The results show that the randomness of the load distribution is obvious in the system working process. Failure dependence has significant influences on system reliability. Moreover, the dispersion of external load has great impacts on the reliability, lifetime distribution, and redundancy of planetary gear systems.