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    • 2. 发明授权
    • Method for predicting vibrational characteristics of rotating structures
    • 预测旋转结构振动特性的方法
    • US07630869B2
    • 2009-12-08
    • US10854608
    • 2004-05-26
    • I-Yeu ShenChaw-Wu TsengJr-Yi Shen
    • I-Yeu ShenChaw-Wu TsengJr-Yi Shen
    • G06G7/48G06F7/60G06F17/10G06F17/50
    • G01H1/003Y02T10/82
    • A method is disclosed for analyzing the vibrational characteristics of rotating devices, such as hard disk drives and jet engines, that are coupled through bearings to flexible supports. In the method, the rotating device is discretized, for example, using a mesh suitable for finite element analysis. The support is also discretized. The natural frequency of elastic vibration modes for the rotating device is calculated and the natural frequency of vibration modes for the support is calculated. The mode shapes are then calculated and a set of modal basis corresponding to the mode shapes is utilized. Bearing stiffness and damping matrices are input, and the Lagrangian equations of motion are integrated numerically in the modal space, to calculate the vibrational response of the rotating device and support. The modal space results are then transformed into ordinary space. The vibrational analysis may be used to design devices having desired vibrational characteristics.
    • 公开了一种用于分析旋转装置(例如硬盘驱动器和喷气发动机)的振动特性的方法,其通过轴承联接到柔性支撑件。 在该方法中,旋转装置例如使用适于有限元分析的网格离散化。 支持也是离散的。 计算旋转装置的弹性振动模式的固有频率,并计算支架的振动模式的固有频率。 然后计算模式形状,并且利用对应于模式形状的一组模态基础。 输入轴承刚度和阻尼矩阵,运动的拉格朗日方程在模态空间中数值积分,以计算旋转装置和支撑件的振动响应。 然后将模态空间结果转换为普通空间。 振动分析可用于设计具有期望的振动特性的装置。