Nonlinear dynamic response of a rotor bearing system due to surface waviness
Nonlinear dynamic response of a rotor bearing system due to surface waviness
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DOI：
10.1023/b:nody.0000042916.10351.ff
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发表时间：
2004-07-01
影响因子：
5.6
通讯作者：
Prakash, R
中科院分区：
文献类型：
--
作者：
Harsha, SP;Sandeep, K;Prakash, R
本文研究了由滚珠轴承支承的刚性转子的径向振动。在解析式中，将球与套圈之间的接触视为非线性弹簧，其刚度由赫兹弹性接触变形理论计算。采用隐式数值积分技术Newmark-beta和Newton-Raphson方法对非线性微分方程进行迭代求解。研究了振动表面波纹度对转子振动的影响。该公式预测了具有特定频率成分的每一阶波幅的离散频谱。仿真得到的数值结果与前人的研究结果相吻合。
In this paper, the radial vibrations of a rigid rotor supported by ball hearings are studied. In the analytical formulation, contacts between the balls and races are considered as nonlinear springs whose stiffnesses are obtained by using Hertzian elastic contact deformation theory. The implicit type numerical integration technique Newmark-beta with the Newton-Raphson method is used to solve the nonlinear differential equations iteratively. The effect of hearing running surface waviness on the vibrations of rotor is investigated. The formulation predicts discrete spectrum with specific frequency components for each order of waviness. Numerical results obtained from the simulation are validated with respect to those of prior researchers.