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
中科院分区:
文献类型:
--
作者:
Yuan Qi;Gao Jin;Li Pu
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.
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DOI:
10.1007/bfb0067703
发表时间:
1978
期刊:
--
影响因子:
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DOI:
10.1115/gt2010-23368
发表时间:
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