Manufacturing Technology 2021, 21(4):544-558 | DOI: 10.21062/mft.2021.065

Power Injection Method-based evaluation of the effect of binding technique on the Coupling Loss Factors and Damping Loss Factors in Statistical Energy Anal-ysis simulations

Marcell Ferenc Treszkai ORCID...1, Alexander Peiffer ORCID...2, Daniel Feszty ORCID...1
1 Audi Hungaria Faculty of Automotive Engineering, Department of Whole Vehicle Engineering, Széchenyi István University. Egyetem tér 1, H-9026 Gyõr. Hungary
2 Audi AG, I/XX-99, 85045 Ingolstadt, Germany

Measurement results on the Damping Loss Factor (DLF) and Coupling Loss Factor (CLF) between two steel plates is presented for 19 different junction types. The junctions involve joining technologies as line welding, point welding, bolting, riveting, gluing or their combinations, with parameters, such as spac-ing between the junction points or the angle between the plates varying. From the measurement results the DLF and CLF values were calculated by the Power Injection Method for the purposes of being ap-plied in Statistical Energy Analysis simulations. Four excitations were applied at each subsystem by impact hammer, while the response was recorded at sixteen response points at each subsystem. The measured CLF values were compared to each other from various aspects. Data were compared to the results obtained from SEA simulations by using the built-in analytical formulas. In general, good com-parison was observed, although the results appeared to be somewhat dependent on the frequency band. Finally, it was examined whether replacing the DLF values with data obtained for an uncoupled flat plate as well the CLF values with data from analytical formulas leads to acceptable accuracy of the re-sults.

Keywords: Statistical Energy Analysis, Damping Loss Factor, Coupling Loss Factor, Junction types, Vibration
Grants and funding:

The work is supported by the Hungarian Academy of Sciences and Audi Hungaria Zrt. through the funding provided to the MTA-SZE Lendület Vehicle Acoustics Research Group.

Received: February 21, 2021; Revised: May 4, 2021; Accepted: July 1, 2021; Prepublished online: July 4, 2021; Published: September 18, 2021  Show citation

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Treszkai MF, Peiffer A, Feszty D. Power Injection Method-based evaluation of the effect of binding technique on the Coupling Loss Factors and Damping Loss Factors in Statistical Energy Anal-ysis simulations. Manufacturing Technology. 2021;21(4):544-558. doi: 10.21062/mft.2021.065.
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