Analysis of Contact and Bending Fatigue for Double-Helical Planetary Gear Train Based on Efficient Critical Plane Methods

IF 3.1 2区材料科学 Q2 ENGINEERING, MECHANICAL

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-01-08 DOI:10.1111/ffe.14555

Zhuang Chen, Qingbing Dong, Xiujiang Shi, Weimin Huang, Bo Zhao

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Abstract

Contact and bending fatigue are the main failure modes in gears. In this study, we propose a finite element model to investigate the fatigue behavior of a double-helical planetary gearbox based on the critical plane methods with a search algorithm to improve calculation efficiency. The finite element mesh is generated along the direction of the contact line to accurately capture contact stress. The time-varying coefficient of friction between contact surfaces and the residual stress in the hardened layer are considered in the developed model. The effectiveness of the model is demonstrated by comparing the predicted fatigue life with measured data from experiments for a spur gear planetary train. It is concluded that the ability of the planet gear to resist contact fatigue dominates the service duration with fatigue cracks initiating nearly parallel to the surface. The surface hardness gradient is recommended to ensure reliable operation throughout its designed life.

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来源期刊

Fatigue & Fracture of Engineering Materials & Structures 工程技术-材料科学：综合

CiteScore

6.30

自引率

18.90%

发文量

256

审稿时长

4 months

期刊介绍： Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.