考虑结合面法向刚度的拉杆转子轴向振动特性

中国机械工程

考虑结合面法向刚度的拉杆转子轴向振动特性

何谦1,2;王艾伦2;陈中祥1;杨俊1

1.湖南师范大学工程与设计学院，长沙，410081
2.中南大学高性能复杂制造国家重点实验室，长沙,410083

出版日期:2018-12-25 发布日期:2018-12-24
基金资助:
国家重点基础研究发展计划(973 计划)资助项目(2013CB035706)
National Basic Research Program (973 Program) （No. 2013CB035706）

The Axial Vibration Characteristics of Rod Fastening Rotor Considered Contact Normal Stiffness

HE Qian1,2;WANG Ailun2;CHEN Zhongxiang1;YANG Jun1

1.Engineering & Design College, Hunan Normal University, Changsha,410081
2.State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha, 410083

Online:2018-12-25 Published:2018-12-24
Supported by:
National Basic Research Program (973 Program) （No. 2013CB035706）

摘要/Abstract

摘要： 针对接触刚度解析模型参数确定困难、精度难以保证等问题，提出了根据弹塑性粗糙表面微体单元受力变形的有限元分析结果确定轮盘结合面法向刚度的方法；为准确获取拉杆转子的轴向振动特性，建立了考虑轮盘结合面法向刚度的集中质量动力学模型；运用上述方法和模型计算了某型实验转子轴向振动的固有频率，并将结果与实测数据进行对比，误差低于5%，证明了该方法的有效性；改变拉杆预紧力，进一步研究预紧力对拉杆转子动力学行为的影响，结果表明：拉杆预紧力对转子的作用效果存在一个饱和区域，可为拉杆预紧力数值的确定提供重要的设计依据。

关键词: 拉杆转子, 结合面法向刚度, 轴向振动, 拉杆预紧力

Abstract: The experimental and statistical parameters which relied on the analytical models is hard to determine, the accuracy is difficult to guarantee and other issues. A method of finite element analysis of the Micro-element Deformation of the elastic-plastic rough surface was proposed herein to determine the normal stiffness of the disk surface. In order to accurately obtain the axial vibration characteristics of the rod rotor, a concentrated mass dynamic model considering the normal stiffness of the roulette joint was established. The natural frequency of the axial vibration of a certain type of experimental rotor was calculated by using the above method and model. The results were compared with the measured data, and the error is less than 5%, which demonstrates the validity of this method. The effect of the pre-tightening force on the dynamic behavior of the rotor was further studied by changing the value of the pre-tightening force. The results show that there is a saturation region for the effect of the rod pre-tightening force on the rotor, which provides important design basis for the determination of the rod pre-tightening force.

Key words: rod fastening rotor, normal stiffness of junction surface, axial vibration, rod pre-tightening force

中图分类号:

TH124

何谦1,2;王艾伦2;陈中祥1;杨俊1. 考虑结合面法向刚度的拉杆转子轴向振动特性[J]. 中国机械工程.

HE Qian1,2;WANG Ailun2;CHEN Zhongxiang1;YANG Jun1. The Axial Vibration Characteristics of Rod Fastening Rotor Considered Contact Normal Stiffness[J]. China Mechanical Engineering.

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