带有裂纹轴的齿轮耦合系统的扭转振动特性

建立了从动齿轮轴带有开裂纹的啮合型齿轮耦合系统动力学模型·对齿轮系统的啮合刚度、传动误差和节线冲击等主要参数进行了讨论·研究了齿轮耦合条件下裂纹轴(从动齿轮轴)和无裂纹轴(主动齿轮轴)的扭转振动特性·基于齿轮系统参数众多的特点,以传动比为主线,研究了两齿轮轴扭转振动特性与裂纹深度、转速和传动比之间的关系·分析结果表明,频率为旋转频率2倍和4倍的谐波成分是带裂纹齿轮轴扭转振动的主要特性,传动比和转速是影响裂纹引发振动的能量及其在两齿轮轴上分布情况的主要参数·

Torsional Vibration Characteristics of Gear System with a Cracked Shaft

Based on the analysis of main parameters of gear system, such as meshing stiffness, transmission error and pitch impulse, a dynamical model of gear system with a cracked shaft is developed. The torsional vibration characteristics of cracked shaft and non-cracked shaft in gear system are studied. Because there are lots of parameters in gear system, an assumption is made that the transmitting ratio is an independent variable, so as to discuss the relationship among the torsional vibration characteristics and transmitting ratio, rotating speed and the cracked depth. The results show that the secondary and quadruple harmonic occurring at operating frequency is the main characteristic of torsional vibration, and the transmitting ratio and rotating speed are the key factors which affect the power crack-inducing vibration and its distribution on the two shafts.