【摘要】 某飞机发动机锥齿轮曾经多次在飞行作业中破坏而导致事故．为寻找事故原因，我们对该齿轮进行了试验模态分析，并在振动台上进行节径型模态疲劳试验，终于在实验室实现了故障再现，为该齿轮失效机理分析提供了重要依据，并为今后同类齿轮的振动设计提供了一种研究手段，为我国齿轮设计准则提出了一个新课题．更多还原

【Abstract】 The breakdowns have happened many times to an airplane engine as a result of the break of a taper gear. In order to find the reason, modal analysis was performed and twodiameter-nodes modal fatigue test on the gear was conducted on a shaker. The breakdown reappearance was realized. Erperimental data were collected which Provide an important basis for analyzing breakdown mechanism of the gear and enable a research methed for vibration design of the same kind of gears.更多还原