[1]李旭娟,缪炳荣,史艳民,等.高速列车比例车体侧墙试验模态分析[J].机车电传动,2017,(03):110-113.[doi:10.13890/j.issn.1000-128x.2017.03.106]
 LI Xujuan,MIAO Bingrong,SHI Yanmin,et al.Experimental Modal Analysis of Scaled Car-body Sidewall for High-speed Vehicles[J].Electric Drive for Locomotives,2017,(03):110-113.[doi:10.13890/j.issn.1000-128x.2017.03.106]
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高速列车比例车体侧墙试验模态分析()
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机车电传动[ISSN:1000-128X/CN:43-1125/U]

卷:
期数:
2017年03期
页码:
110-113
栏目:
试验检测
出版日期:
2017-05-10

文章信息/Info

Title:
Experimental Modal Analysis of Scaled Car-body Sidewall for High-speed Vehicles
文章编号:
1000-128X(2017)03-0110-04
作者:
李旭娟缪炳荣史艳民王名月杨忠坤
(西南交通大学牵引动力国家重点实验室,四川 成都 610031)
Author(s):
LI Xujuan MIAO Bingrong SHI Yanmin WANG Mingyue YANG Zhongkun
( Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu, Sichuan 610031, China )
关键词:
比例车体侧墙试验模态分析单输入多输出高速列车
Keywords:
scaled car-body sidewall experimental modal analysis SIMO high-speed vehicles
分类号:
U292.91+4
DOI:
10.13890/j.issn.1000-128x.2017.03.106
文献标志码:
A
摘要:
根据线性系统的试验模态分析(EMA)理论、SIMO 分析方法、多参考点模态测试原理,针对1:8 比例车体进行侧墙试验模态测试以及模态参数的辨识。根据比例车体外形尺寸,建立试验测试模型;进行传感器的布置并设置模态测试参数;利用锤击法及DHDAS 软件系统进行数据采集及分析后处理;利用Polylscf 模态提取法,得到比例车体侧墙的前四阶弹性模态参数和对应的阵型。结果表明:该型比例车体侧墙一阶模态为61.6 Hz、二阶模态为120 Hz、三阶模态为125.5 Hz、四阶模态为139 Hz。通过比较不同输入激励类型,比例车体一阶模态对于激励施加位置不敏感,侧墙激励下的二阶、三阶和四阶幅值大于顶板激励幅值,最大相差5.132 m/s2/N,模态响应幅值对于激励施加位置很敏感。信号频谱成分与模态频率一致,证实了试验结果的正确性。
Abstract:
According to the theory of experimental modal analysis (EMA), SIMO analysis method, multi-reference point modal test, experimental modal test and modal parameters identification of the scaled 1:8 car-body’s sidewall were conducted. The test model was built on depending on the proportion of body dimensions; Sensors were arranged and modal test parameters were set; Data collection and analysis were conducted by using hammering method and DHDAS software system, and first four elastic modal parameters and the corresponding mode of its sidewall were obtained by using the Polylscf modal extraction. The results showed that: the 1st modal of the sidewall was 61.6 Hz; the second modal was 120 Hz; the third modal was 125.5 Hz; the fourth modal was near to 139 Hz. By comparing different input type, the 1th modal of scaled car-body was not sensitive to the position of input, the amplitudes of the 2nd, 3rd and 4th modal for the sidewall input were bigger than the case of the roof input, the maximum difference was 5.132 m/s2/N, so this case was sensitive to the position of the input. Signal spectral components were consistent with the modal frequencies, which verified that the results were correct.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介:李旭娟(1990-),女,硕士研究生,主要从事结构载荷识别研究。
更新日期/Last Update: 2017-05-10