Nonlinear Dynamics of the Rod-Fastened Jeffcott Rotor

Nonlinear Dynamics of the Rod-Fastened Jeffcott Rotor
复制标题

杆固定 Jeffcott 转子的非线性动力学

DOI:
10.1115/1.4026241
复制
发表时间:
2014-04
影响因子:
1.7
通讯作者:
Li Pu
Li Pu
中科院分区:
工程技术4区
文献类型:
--
作者:
Yuan Qi;Gao Jin;Li Pu

文献摘要

参考文献

被引文献

相似文献

连杆式转子是由若干圆盘通过一根中心连杆或沿圆周沿着分布的多根连杆夹在一起而构成的。由于圆盘中接触界面的非线性弯曲刚度,特别是当接触表面部分分离时,杆紧固转子的动力学可能不同于实心转子的动力学。本文采用有限元法计算了杆式Jeffcott转子的非线性弯曲刚度。然后采用谐波平衡法对转子进行了动力学分析。当无量纲载荷γ 1从1增加到2.5时,Jeffcott转子的弯曲刚度显著降低。因此,转子的动力学是非线性的,当它受到一个很大的不平衡力。旋转转子的响应主要包含前向1X分量或前向1X分量和后向1X分量。然而,转子可以稳定在取决于操作参数和其历史的状态。
Rod-fastened rotors are composed of some disks clamped together by a central tie rod or several tie rods distributed along the circumference. Due to the nonlinear flexural stiffness of the contact interfaces in disks, especially when the contact surfaces are partially separated, the dynamics of the rod-fastened rotors are potentially different from that of the solid rotors. In this paper, the nonlinear flexural stiffness of a rod-fastened Jeffcott rotor is calculated by the finite element method (FEM). Then the harmonic balance method is adopted to analyze the dynamics of the rotor. The flexural stiffness of a rod-fastened Jeffcott rotor dramatically decreased with the increase of the dimensionless load γ1from 1 to 2.5. Thus, the dynamics of the rotor were nonlinear when it was subjected to a large unbalance force. The response of the rotating rotor contains a predominantly forward 1X component or both forward 1X component and backward 1X components. However, the rotor may settle in a state depending upon both the operating parameters and its history.
DOI: 10.1007/bfb0067703
发表时间: 1978
期刊: --
影响因子: --
作者:
M. Powell
通讯作者: M. Powell
DOI: 10.1115/gt2010-23368
发表时间: 2010-10
期刊: --
影响因子: --
作者:
Heng Liu;Chen Li;Weimin Wang;Xiaobin Qi;Minqing Jing
通讯作者: Heng Liu;Chen Li;Weimin Wang;Xiaobin Qi;Minqing Jing
DOI: 10.1115/1.4000591
发表时间: 2010-09-01
影响因子: 1.5
作者:
Zhang, Yanchun;Du, Zhaogang;Liu, Shaoquan
通讯作者: Liu, Shaoquan
DOI: --
发表时间: 2000
期刊: --
影响因子: --
作者:
A. Isa;J. Penny;S. Garvey
通讯作者: A. Isa;J. Penny;S. Garvey
DOI: 10.1007/bf01858295
发表时间: 1990-05
期刊: Nonlinear Dynamics
影响因子: 5.6
作者:
Y. B. Kim;S. Noah
通讯作者: Y. B. Kim;S. Noah