RELIABILITY ANALYSIS OF GEAR TRANSMISSION WITH CONSIDERING FAILURE CORRELATION

Reliability analysis is of great importance in engineering practices. However, reliability analysis of mechanical system under considering correlation for multiple failure modes is very difficult. Gear is the key component in many mechanical transmission systems and therefore its reliability analysis is very important. Based on the standards of strength calculation of gears and stress-strength interference theory as well as copula theory, the reliability of gear transmission with three failure modes, including gear bending fatigue, gear flank contact fatigue and flank adhesion, is analyzed The correlation of the three failure modes is studied and reliability of their correlation is also evaluated based on the selected copula functions. The proposed method can be used to facilitate the design, manufacturing, and maintenance planning of gears.