DYNAMIC RESPONSE OF TWO ROTORS CONNECTED BY RIGID MECHANICAL COUPLING WITH PARALLEL MISALIGNMENT
DYNAMIC RESPONSE OF TWO ROTORS CONNECTED BY RIGID MECHANICAL COUPLING WITH PARALLEL MISALIGNMENT
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DOI：
10.1006/jsvi.2001.3866
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发表时间：
2002-01
影响因子：
4.7
通讯作者：
K. Al-Hussain;I. Redmond
中科院分区：
文献类型：
--
作者：
K. Al-Hussain;I. Redmond
抽象通过理论和数值分析来检查平行不一致对两个旋转轴（Jeffcott Rotors）的扭转响应的影响。揭示了平行的未对准通过刚度矩阵和力矢量的翻译和角度示范。 NEWMARK和NEWTON -RAPHSON方法的结合，以确定未对准幅度的无限频率和瞬态响应。翻译和角方向存在1× - 旋转速度兴奋，这表明平行的未对准可以是扭转和侧向激发。
Abstract The effect of parallel misalignment on the lateral and torsional responses of two rotating shafts (Jeffcott rotors) is examined with theoretical and numerical analysis. The general equations of motion are derived and given in dimensionless form to represent the general case. The equations of motion revealed that parallel misalignment couples the translation and angular deflections through the stiffness matrix and the force vector. The non-linear equations are solved numerically using a combination of Newmark and Newton–Raphson methods to determine the dimensionless frequency and transient responses in terms of misalignment magnitude. The numerical results show that the system natural frequencies are excited at transient condition due to the presence of pure parallel misalignment. At steady state condition, the 1×-rotational speed excitation is present in the translation and angular directions, which indicates that parallel misalignment can be a source of both torsional and lateral excitations.