Influence of frequency resolution in case of frequency response function measurement in structural dynamics
Frequency resolution is an essential parameter in acoustical testing, even if we are using numerical or experimental method, for example when determining frequency response function (FRF) of a dynamic mechanical system, or executing modal analysis based on the FRFs. Finer resolution leads to more ac...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Széchenyi István University
2021-09-01
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| Series: | Acta Technica Jaurinensis |
| Subjects: | |
| Online Access: | https://acta.sze.hu/index.php/acta/article/view/618 |
| _version_ | 1818943463275626496 |
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| author | Zoltán Gazdagh Balázs Vehovszky |
| author_facet | Zoltán Gazdagh Balázs Vehovszky |
| author_sort | Zoltán Gazdagh |
| collection | DOAJ |
| description | Frequency resolution is an essential parameter in acoustical testing, even if we are using numerical or experimental method, for example when determining frequency response function (FRF) of a dynamic mechanical system, or executing modal analysis based on the FRFs. Finer resolution leads to more accurate results, at the expense of longer calculation/measurement process and larger data size. This parameter is generally set based on rules of thumb, prior practice or with big margin for safety. This results in waste time and data storage if the required frequency resolution is overestimated, or even significant errors in the results, if it is underestimated. Present paper offers a direct, method for the conscious determination of optimal frequency resolution. It is based fully on theoretical considerations, and investigates amplitude and phase distortion at resonances as target parameters. Beside defining the steps of the process, it is tested on a real structure, and the results are presented as well, proving the applicability and the appropriateness of the method. With this method, development engineers get a practical tool for adjusting the parameters of dynamic measurements and simulations. |
| first_indexed | 2024-12-20T07:27:43Z |
| format | Article |
| id | doaj.art-5d3c87a3e5554fbc9c173938e52a26d4 |
| institution | Directory Open Access Journal |
| issn | 2064-5228 |
| language | English |
| last_indexed | 2024-12-20T07:27:43Z |
| publishDate | 2021-09-01 |
| publisher | Széchenyi István University |
| record_format | Article |
| series | Acta Technica Jaurinensis |
| spelling | doaj.art-5d3c87a3e5554fbc9c173938e52a26d42022-12-21T19:48:30ZengSzéchenyi István UniversityActa Technica Jaurinensis2064-52282021-09-0114450852010.14513/actatechjaur.00618546Influence of frequency resolution in case of frequency response function measurement in structural dynamicsZoltán Gazdagh0Balázs Vehovszky1Audi Hungaria ZRt, Whole Vehicle Engineering, Győr, Audi Hungária út 1. H-9027, HungarySzéchenyi István University, Department of Whole Vehicle Engineering, Győr, Egyetem tér 1. H-9026, HungaryFrequency resolution is an essential parameter in acoustical testing, even if we are using numerical or experimental method, for example when determining frequency response function (FRF) of a dynamic mechanical system, or executing modal analysis based on the FRFs. Finer resolution leads to more accurate results, at the expense of longer calculation/measurement process and larger data size. This parameter is generally set based on rules of thumb, prior practice or with big margin for safety. This results in waste time and data storage if the required frequency resolution is overestimated, or even significant errors in the results, if it is underestimated. Present paper offers a direct, method for the conscious determination of optimal frequency resolution. It is based fully on theoretical considerations, and investigates amplitude and phase distortion at resonances as target parameters. Beside defining the steps of the process, it is tested on a real structure, and the results are presented as well, proving the applicability and the appropriateness of the method. With this method, development engineers get a practical tool for adjusting the parameters of dynamic measurements and simulations.https://acta.sze.hu/index.php/acta/article/view/618transfer functionfrequency resolutiondynamic analysisengineering acoustics |
| spellingShingle | Zoltán Gazdagh Balázs Vehovszky Influence of frequency resolution in case of frequency response function measurement in structural dynamics Acta Technica Jaurinensis transfer function frequency resolution dynamic analysis engineering acoustics |
| title | Influence of frequency resolution in case of frequency response function measurement in structural dynamics |
| title_full | Influence of frequency resolution in case of frequency response function measurement in structural dynamics |
| title_fullStr | Influence of frequency resolution in case of frequency response function measurement in structural dynamics |
| title_full_unstemmed | Influence of frequency resolution in case of frequency response function measurement in structural dynamics |
| title_short | Influence of frequency resolution in case of frequency response function measurement in structural dynamics |
| title_sort | influence of frequency resolution in case of frequency response function measurement in structural dynamics |
| topic | transfer function frequency resolution dynamic analysis engineering acoustics |
| url | https://acta.sze.hu/index.php/acta/article/view/618 |
| work_keys_str_mv | AT zoltangazdagh influenceoffrequencyresolutionincaseoffrequencyresponsefunctionmeasurementinstructuraldynamics AT balazsvehovszky influenceoffrequencyresolutionincaseoffrequencyresponsefunctionmeasurementinstructuraldynamics |