摘要
本文一个非线性单自由度模型用来分析在汽车手动变速箱中出现的齿轮敲击振动。为了考虑由于啮合齿轮的两轮齿间间隙充的油的阻尼的影响,推荐了一个简单的计及油膜挤压影响的一维模型。该挤压模型假定阻尼力与油粘度和轮齿曲面油膜的延展有关,而这种延展又取决于润滑条件(干聚油坑,飞溅,浸浴)。由某些数字仿真提供的结果,进行对一对斜齿渐开线齿轮轮齿碰撞后检定油降低高频振动的能力。特别通过用对传动齿轮谐和运动的影响分析从动齿轮的瞬态响应来研究油粘度和间隙延展对敲击特性施加的影响。
In this paper a non-linear one-degree-of-freedom model for analysis of gear rattle vibrations in automotive manual transmissions is presented. In order to take into account the damping effects owing to the oil in the gap between two teeth of a meshing gear, a simple one-dimensional model for the oil-film squeeze effects is proposed. The squeeze model assumes that the damping force is proportional to the oil viscosity and to the extension of the oil film in the plane of curvature of the teeth, which may depend on the lubrication conditions （dry sump, splash, bath）.
The results provided from several numerical simulations, carried out with reference to helical involute tooth pairs, confirm the capability of oil in reducing the high-frequency vibrations subsequent to the impact between the teeth. In particular, the influence exerted by oil viscosity and gap extension on the rattle characteristics is investigated through the analysis of the transient response of the driven gear by imposing a harmonic motion to the driving gear.
出处
《传动技术》
2006年第3期15-21,48,共8页
Drive System Technique
关键词
齿轮敲击
汽车变速箱
润滑
Gear rattle Automotive transmission Lubrication
