华南理工大学学报(自然科学版) ›› 2015, Vol. 43 ›› Issue (3): 21-28.doi: 10.3969/j.issn.1000-565X.2015.03.004

• 机械工程 • 上一篇    下一篇

铝合金后中值波电流焊接工艺研究

李伟光1 杨期江1 蒙启泳2 彭喆1 罗健彬赵伟1 骆劼行1   

  1. 1. 华南理工大学 机械与汽车工程学院,广东 广州 510640; 2. 华南理工大学广州学院 机械工程学院,广东 广州 510800
  • 出版日期:2015-03-25 发布日期:2015-02-10
  • 通信作者: 李伟光(1958-),男,教授,博士生导师,主要从事制造过程计算机控制、旋转机械振动与故障诊断等研究. E-mail:wguangli@scut.edu.cn
  • 作者简介:李伟光(1958-),男,教授,博士生导师,主要从事制造过程计算机控制、旋转机械振动与故障诊断等研究.
  • 基金资助:
    粤港关键领域重点突破项目(2011BZ100012);南沙科技项目(2014CX07)

Experimental Investigation into Dynamic Characteristics of Tilting Pad Bearing with Leading Edge Groove

Li Wei-Guang1 Yang Qi-jiang1 Meng Qi-yong2 Peng Zhe1 Luo Jian-bin1 Zhao Wei1 Luo Jie-xing1   

  1. 1. School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;2. School of Mechanical Engineering,Guangzhou College of South China University of Technology,Guangzhou 510800,Guangdong,China
  • Online:2015-03-25 Published:2015-02-10
  • Contact: 李伟光(1958-),男,教授,博士生导师,主要从事制造过程计算机控制、旋转机械振动与故障诊断等研究. E-mail:wguangli@scut.edu.cn
  • About author:李伟光(1958-),男,教授,博士生导师,主要从事制造过程计算机控制、旋转机械振动与故障诊断等研究.
  • Supported by:
    Supported by the Projects of Key Areas in Guangdong and Hong Kong(2011BZ100012)

摘要: 针对可倾瓦轴承润滑的特征,开发了一种新型前缘沟槽型(LEG)三瓦可倾瓦轴承;为获取该可倾瓦轴承的试验参数,研制了一套具有自动采集数据、实时分析数据等功能的可倾瓦轴承动态特性测试试验台;对比分析了浸润式滑动轴承与前缘沟槽型滑动轴承的轴瓦温度特性;采用有限差分算法理论计算了该轴承的动态特性参数,采用扫频激振方法试验研究了该轴承的8 个动态特性参数,并通过对比分析理论计算与试验结果验证了试验方法的有效性. 研究表明,所开发的滑动轴承具有较好的温度特性及刚度阻尼特性.

关键词: 前缘沟槽, 可倾瓦轴承, 轴瓦温度, 动态特性

Abstract: Firstly,according to the lubrication characteristics of tilting pad bearing,a novel three-pad tilting pad bearing with leading edge groove (LEG) was proposed. Secondly,in order to obtain the test parameters of the bearing,a dynamic performance test rig with the functions of automatic data acquisition and real-time data analysis was developed. Then,the temperature characteristics of flooded bearing and LEG bearing were analyzed in a com-parison way,and eight dynamic parameters of tilting pad bearing were obtained respectively via finite difference al-gorithm and frequency sweep excitation test. Finally,the effectiveness of the proposed test method was verified by a comparison between the theoretical results and the test ones. It is found that the developed bearing is of good tempera-ture,stiffness and damping characteristics.

Key words: leading edge groove, tilting pad bearing, pad temperature, dynamic characteristic