【摘要】 基于弹性接触动力学理论和齿轮传动物理模型，对渐开线变齿厚齿轮啮合冲击问题进行了分析，建立了变齿厚齿轮全齿啮合接触冲击模型.通过模拟轮齿啮合接触状态，对轮齿啮合区域展开了讨论，利用LS-DYNA软件进行接触碰撞分析，分别研究了冲击合力和冲击应力随转速和冲击位置的变化规律.结果表明：转速和冲击位置对冲击合力和冲击应力影响显著，且冲击最大应力主要集中在齿顶和轮齿的大小端附近；转速越大，轮齿受载面与非受载面之间的冲击应力相差越大.更多还原

【Abstract】 Based on the elastic contact dynamics theory and the physical model of gear transmission, the mesh impact problem of involute variable-thickness gears is analyzed, and the full tooth mesh contact impact model of variable-thickness gears is established; by simulating the gear mesh contact state, the gear mesh area is discussed, and the contact collision analysis is carried out by using LS-DYNA software to study the impact force and impact stress with speed and impact position respectively. The results show that the speed and impact position have a significant influence on the impact force. The results show that the rotational speed and impact position have a great influence on the impact force and impact stress, and the maximum impact stress is mainly concentrated near the top of the tooth and the large and small ends of the gear teeth; the larger the rotational speed is, the greater the difference in impact stress between the loaded and unloaded surfaces of the gear teeth.更多还原