[1] Jiao Renqiang, Zhang Jianrun, Xue Fei, et al. Dynamic analysis and experimental study of vibro-acoustic systemwith uncertainties at middle frequencies [J]. Journal of Southeast University (English Edition), 2017, 33 (2): 166-170. [doi:10.3969/j.issn.1003-7985.2017.02.007]

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Dynamic analysis and experimental study of vibro-acoustic systemwith uncertainties at middle frequencies()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

33

Issue:

2017 2

Page:

166-170

Research Field:

Computer Science and Engineering

Publishing date:

2017-06-30

Info

Title:

Dynamic analysis and experimental study of vibro-acoustic systemwith uncertainties at middle frequencies

Author(s):

Jiao Renqiang¹;  2;  Zhang Jianrun¹;  Xue Fei¹

¹School of Mechanical Engineering, Southeast University, Nanjing 211189, China
²School of Mechatronic Engineering, Hubei Polytechnic University, Huangshi 435003, China

Keywords:

hybrid finite element method and statistic energy analysis(FE-SEA)method;  dynamic analysis;  vibro-acoustic system;  uncertainties;  mid-frequency range

PACS:

TP391

DOI:

10.3969/j.issn.1003-7985.2017.02.007

Abstract:

To take into account the influence of uncetainties on the dynamic response of the vibro-acousitc structure, a hybrid modeling technique combining the finite element method(FE)and the statistic energy analysis(SEA)is proposed to analyze vibro-acoustics responses with uncertainties at middle frequencies. The mid-frequency dynamic response of the framework-plate structure with uncertainties is studied based on the hybrid FE-SEA method and the Monte Carlo(MC)simulation is performed so as to provide a benchmark comparison with the hybrid method. The energy response of the framework-plate structure matches well with the MC simulation results, which validates the effectiveness of the hybrid FE-SEA method considering both the complexity of the vibro-acoustic structure and the uncertainties in mid-frequency vibro-acousitc analysis. Based on the hybrid method, a vibro-acoustic model of a construction machinery cab with random properties is established, and the excitations of the model are measured by experiments. The responses of the sound pressure level of the cab and the vibration power spectrum density of the front windscreen are calculated and compared with those of the experiment. At middle frequencies, the results have a good consistency with the tests and the prediction error is less than 3.5 dB.

References:

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Memo

Memo:

Biographies: Jiao Renqiang(1984—), male, graduate; Zhang Jianrun(corresponding author), male, doctor, professor, zhangjr@seu.edu.cn.
Foundation items: Science and Technology Support Planning of Jiangsu Province(No.BE2014133), the Open Foundation of Key Laboratory of Underwater Acoustic Signal Processing(No.UASP1301), the Prospective Joint Research Project of Jiangsu province(No.BY2014127-01).
Citation: Jiao Renqiang, Zhang Jianrun, Xue Fei. Dynamic analysis and experimental study of vibro-acoustic system with uncertainties at middle frequencies[J].Journal of Southeast University(English Edition), 2017, 33(2):166-170.DOI:10.3969/j.issn.1003-7985.2017.02.007.

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