In view of the actual situation that traditional methods for repairing the constantly broken rotors of Model 102/02 excavate coal machine will cause too much reducing the operation life,we expound the necessity of improvement.
针对102/02型采煤机电动部转子轴经常断裂,经我厂按传统工艺修复后,使用寿命太低的实际情况,论证了改进工作的必要性,在着重分析了该型电机转子轴断裂的原因之后,提出了相应的改进措施,并验证其改进效果。
An FEM model of rotor-bearing system was set up for a single-span-two-disc test rig to obtain such model parameters as the first and second order natural frequency and vibration mode vectors.
以某单跨双盘模型转子实验台为例,建立了该转子-轴承系统有限元模型,得到转子系统前两阶固有频率和振型向量等模态参数·基于转子系统碰摩力的周期性假设,利用模态扩展方法,对故障和健康转子系统振动信号的残差矩阵进行傅立叶级数的分频谐波近似,估算得到转子-轴承各节点的碰摩力·根据转子各结点估算碰摩力的频谱、时序以及等效碰摩力幅确定碰摩发生位置,进而对碰摩故障的程度进行定性评估·试验表明,这种方法可以对转子周期性碰摩进行较精确的诊断,并为其他转子-轴承系统故障诊断提供参考
A reduction calculation method based on fixed interface component mode synthesis is applied to analyze nonlinear dynamic stability of an actual large-scale rotor-bearing system.
采用基于固定界面模态综合法的降维方法对大型实际非线性转子-轴承系统稳定性进行了分析。
The nonlinear dynamical characteristics of a actual large-scale rotor-bearing system is firstly investigated by using numerical simulating method, and the computational results accord with the operating experiences.
采用数值计算方法对实际大型转子-轴承系统的非线性动力学特性进行了研究,计算结果能与现场的运行经验很好地吻合。
The influence of oil film stiffness of thrust bearing on the natural frequency of generator rotor system;
推力轴承油膜刚度对发电机转子轴系固有频率的影响
Through using the computer in the teaching of critical speed experiment of flex rotor axis, this paper measurers the revenant data as the flex rotor axis passing the critical speed, and expounds the advantages of using computer in this experiment.
通过将计算机用于柔性转子轴的临界转速实验教学,对柔性转子轴在通过其临界转速时进行了相关数据的测量,并阐述了将计算机应用于该实验的优点。