中央传动锥齿轮光弹性应力分析

本文用三维光弹性法分析锥齿轮在扭矩和离心载荷下的应力分布。光弹性试验结果表明锥齿轮在两种载荷分别作用下,齿根应力分布是不同的。根据光弹性试验和综合振动试验结果得出如下结论:1.锥齿轮齿槽裂纹并非由起动扭矩引起。2.锥齿轮在高转速下,在槽底的离心应力和振动应力的组合应力是引起齿轮破坏的主要原因。

PHOTOELASTIC STRESS ANALYSIS OF A BEVEL GEAR

The three-dimensional photoelasticity method is used to analyze the stress distribution in the bevel gear under torsional moment and centrifugal load. The results show that the stress distributions in roots of the bevel gear are different under respective loads. According the results and the comprehensive vibration test data, it can be concluded as follows: 1. The cracks at the nothes of the bevel gear teeth are not caused by starting torque. 2. At high gearing speed the combined stresses of centrifugal load and resonance vibration at the notches are the main cause for the catastrophic failure of the bevel gear.