[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.20910/JASE.2020.14.6.58

Prediction of Gear Bending Fatigue Life of Electro-mechanical Actuator for Aircraft Through Finite Element Analysis

Kim, Taehyung (Major of Aeronautical & Mechanical Engineering, Division of Aeronautics, Cheongju University)
Seok, Taehyeon (Major of Aeronautical & Mechanical Engineering, Division of Aeronautics, Cheongju University)
Kwon, Soon-hyeong (PGM R&D Laboratory, LIG Nex1 Co. Ltd.)
Lee, Byung-ho (PGM R&D Laboratory, LIG Nex1 Co. Ltd.)
Kwon, Byung-gi (PGM R&D Laboratory, LIG Nex1 Co. Ltd.)
Kwon, Jun-yong (Aerospace Technology Research Institute, Agency for Defence Development)
Cheong, Seong-kyun (Dpt. Mechanical and Automotive Engineering, Seoul National University of Science and Technology)

Publication Information

Journal of Aerospace System Engineering / v.14, no.6, 2020 , pp. 58-67 More about this Journal

Abstract

In this study, finite element fatigue analysis combined with a fatigue correlation factor is proposed to predict the bending fatigue life of a gear in an electro-mechanical aircraft actuator. First, stress-life curves are obtained for the gear material via a round bar fatigue test. Subsequently, stochastic stress-life (P-S-N) curves are derived for 50% and 1% failure probabilities, separately. The curves are applied to the fatigue analysis model of a single gear tooth, and the effect of the fatigue correction factor is analyzed. The analytical P-S-N curves reflecting the fatigue correction factor matched the experimental data. This shows that the analytical fatigue life is reliable and that the analysis technique is effective.

Keywords

Electro-mechanical Actuator; Bending Fatigue Analysis; Fatigue Life; Gear Tooth; Probabilistic Stress-Life Curve;

Citations & Related Records

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