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首页> 外文期刊>Journal of the American Helicopter Society >Gear Crack Propagation Path Studies-Guidelines for Ultra-Safe Design
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Gear Crack Propagation Path Studies-Guidelines for Ultra-Safe Design

机译:齿轮裂纹扩展路径研究-超安全设计指南

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摘要

Design guidelines are established to prevent catastrophic rim fracture failure modes when considering gear tooth bending fatigue. Analysis is performed using the finite element method with principles of linear elastic fracture mechanics. Crack propagation paths are predicted for a variety of gear tooth and rim configurations. The effects of rim and web thicknesses, initial crack locations, and gear tooth geometry factors such as diametral pitch, number of teeth, pitch radius, and tooth pressure angle are considered. Design maps of tooth/rim fracture modes including effects of gear geometry, applied load, crack size and material properties are developed.
机译:建立了设计准则,以在考虑轮齿弯曲疲劳时防止灾难性的轮辋断裂失效模式。使用线性弹性断裂力学原理的有限元方法进行分析。预测了各种齿轮齿和轮辋构造的裂纹扩展路径。考虑轮辋和腹板厚度,初始裂纹位置以及齿轮齿几何形状因素(例如直径节距,齿数,节距半径和齿压力角)的影响。绘制了齿/轮缘断裂模式的设计图,包括齿轮几何形状,施加的载荷,裂纹尺寸和材料性能的影响。

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