许丽.列车运行监控装置主机的超高斯加速振动试验研究[J].装备环境工程,2022,19(8):135-142. XU Li.Research on Super-Gaussian Accelerated Vibration Test of LKJ Case[J].Equipment Environmental Engineering,2022,19(8):135-142.
列车运行监控装置主机的超高斯加速振动试验研究
Research on Super-Gaussian Accelerated Vibration Test of LKJ Case
  
DOI:10.7643/issn.1672-9242.2022.08.016
中文关键词:  LKJ  超高斯  加速因子  振动试验  数据归纳  可靠性中图分类号:U260.14 +3 文献标识码:A 文章编号:1672-9242(2022)08-0135-08
英文关键词:LKJ  super-Gaussian  acceleration factor  vibration test  data induction  reliability
基金项目:
作者单位
许丽 湖南铁路科技职业技术学院,湖南 株洲 412001 
AuthorInstitution
XU Li Hunan Vocational College of Railway Technology, Hunan Zhuzhou 412001, China 
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中文摘要:
      目的 解决LKJ主机的超高斯振动试验问题。方法 基于LKJ主机的实测振动环境数据,提出一种超高斯振动数据归纳方法,并应用该方法归纳出LKJ主机xyz向的实测PSD,同时按5.66的加速因子构建出超高斯加速振动试验剖面,其中xyz向PSD的RMS分别为3.34、6.28、3.85 m/s2,峰度分别为6.48、6.58、6.81,频率范围均为2~350 Hz。最后,采用超高斯加速试验剖面分别对2个LKJ主机进行超高斯振动试验验证。结果 试验共激发出7类故障模式,这与特定线路运行LKJ主机现场故障模式高度吻合。结论 该试验方法验证了LKJ主机超高斯加速振动试验的有效性。
英文摘要:
      This research aims to solve the problem of the super-Gaussian vibration test of the LKJ case.Therefore,this paper proposes a super-Gaussian vibration data induction method based on the measured vibration environment data of the LKJ case, and uses this method to sum up the x-direction, y-direction and z-direction of the LKJ case measured PSD, and constructed a super-Gaussian accelerated vibration test profile according to an acceleration factor of 5.66, in which the RMS of the x, y, and z-direction PSD are 3.34, 6.28, 3.85 m/s2respectively, the kurtosis is respectively 6.48, 6.58, 6.81, and the frequency range is 2~350 Hz. Finally, the super-Gaussian acceleration test profile is used to verify the super-Gaussian vibration test of the two LKJ cases.The test has excited 7 types of failure modes, which are highly consistent with the on-site failure mode of the LKJ case running on a specific line.In conclusion,this test method verifies the effectiveness of the super-Gauss accelerated vibration test of the LKJ case.
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