论文部分内容阅读
根据转子系统轴承刚度和阻尼系数呈各向异性及圆盘具有偏心量的特点,建立全矢谱各参数、刚度、阻尼系数和偏心量之间的关系。应用ANSYS建立转子-支承系统的有限元模型,分析刚度、阻尼系数以及偏心量对全矢谱各参数的影响。研究结果表明,在恒定转速下,刚度和阻尼系数对主副振矢、偏心率及方位角均有影响,偏心量仅影响主副振矢的大小,对轴心运动轨迹的形状和位置没有影响。根据上述参数之间的关系,提出了根据偏心率和主副振矢故障判别的方法,并给出传感器的安装原则,研究结果对于应用全矢谱技术进行旋转机械动力学特性分析及故障诊断具有一定的参考价值。
According to the characteristics of the bearing stiffness and damping coefficient anisotropy of the rotor system and the eccentricity of the disk, the relationship between the parameters of the full spectrum, stiffness, damping coefficient and eccentricity is established. The finite element model of rotor-bearing system was established by ANSYS, and the influence of stiffness, damping coefficient and eccentricity on the parameters of the full-spectrum was analyzed. The results show that the stiffness and damping coefficient have an influence on the principal component, the eccentricity and the azimuth at constant rotational speed. The eccentricity affects only the principal and minor azimuths, and has no effect on the shape and position of the axial locus . According to the relationship between the above parameters, a method based on eccentricity and primary and secondary vibration vectors is proposed, and the principle of sensor installation is given. The research results are as follows: (1) For the analysis of dynamic mechanical characteristics of rotating machinery and fault diagnosis using full-spectrum technique Certain reference value.