传递矩阵法在弓形柔性转子平衡中的应用  

Application of Transfer Matrix Method in Flexible Rotor with Bow Balancing

作　　者：陈绪龙[1] 曾国英[1] 赵登峰[1] 杨帅[1] 

机构地区：[1]西南科技大学制造科学与工程学院,四川绵阳621010

出　　处：《机床与液压》2015年第11期76-81,共6页Machine Tool & Hydraulics

基　　金：西南科技大学制造过程测试技术省部共建教育部重点实验室资助项目(132X2K06)

摘　　要：转子质量不平衡和弓形变形是引起旋转机械振动故障的两个最重要因素,研究柔性转子动平衡特性对抑制旋转机械的振动起到了关键作用。通过对DH5957转子轴承系统动平衡实验,在对转子系统进行传统的质量不平衡分析的基础上进一步分析了转子系统弓形变形,基于传递矩阵法得到了转子轴承系统的质量不平衡影响系数和弓形变形影响系数;利用转子影响系数和低速转子响应计算得到了一阶临界转速转子多个平衡面所需的校正不平衡量,并将该校正不平衡量等效到一个平衡面上,进而通过实验在该平衡面施加配重进行转子平衡。通过对实验数据的分析表明:该转子在一阶临界转速下振动响应衰减至21.1%,挠性转子平衡周期也相应地降低至一次试重;转子并能够在其一阶临界转速下平稳过渡。Mass unbalance and bow deformation of a rotor are the most important factors causing rotating mechanical vibration fail- ure, and studying the characteristics of flexible rotor dynamic balancing has played a key role in suppressing the vibration of rotating machinery. Through the DH5957 rotor-bearing system balancing test, on the basis of the traditional rotor mass imbalance analysis of the rotor system, bow deformation of rotor system was further analyzed. Based on the transfer matrix method （TMM）, mass unbalance in- fluence coefficients and bow deformation influence coefficients of rotor-bearing system were gotten. The many correction unbalance vec- tors needed by multi-plane of balancing of the rotor at first critical speed were calculated and obtained by using the influence coefficient and low speed rotor response. These correction unbalance vectors were equivalent to a single balancing plane, and then the experimental rotor was balanced by adding a single correction mass on the balancing plane. The analysis of experimental data show that the rotor vi- bration response is attenuated to 21.1% at the first critical speed, the flexible rotor balancing cycle is reduced to once test weight ac- cordingly; and the rotor can be smoothly transition at the first critical speed.

关 键 词：振动 质量不平衡 弓形变形 传递矩阵法 影响系数 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]