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Approach for calibrated measurement of the frequency response for characterization of compliant interface elements on vibration test benches
Citation Link: https://doi.org/10.15480/882.3845
Publikationstyp
Journal Article
Date Issued
2021-10
Sprache
English
TORE-DOI
Journal
Volume
11
Issue
20
Article Number
9604
Citation
Applied Sciences 11 (20): 9604 (2021-10)
Publisher DOI
Scopus ID
Publisher
Multidisciplinary Digital Publishing Institute
In vibration tests, the behavior of the structure depends on its mechanical boundary conditions, which are represented in physical tests by connecting elements with mechanical properties. Adjustable impedance elements are machine elements fulfilling the task of an adjustable connection on a vibration test bench and therefore represent a variety of properties. Their mechanical properties must be known over wider ranges than comparable compliant structures tested in the literature. This paper is dedicated to vibration testing of the adjustable impedance elements themselves, taking the influences of fixtures and measuring devices of the test bench into account. Different approaches for measuring the frequency response functions are applied to freely vibrating masses at a hydraulic and an electrodynamic test bench. Mass cancellation and the frequency-dependent measurement systems function have shown their usefulness in characterizing the biodynamic response of hand–arm models before. This measurement method is extended to be transferable to machine elements to obtain reliable results under a wider range of test conditions. The necessity for dynamically calibrated measurement of the frequency response functions is demonstrated for different free vibration masses and for two compliant elements on two different test benches to provide results over a wide range of test conditions.
DDC Class
600: Technik
620: Ingenieurwissenschaften
Funding Organisations
More Funding Information
This research was funded by by DFG - Deutsche Forschungsgemeinschaft (Project AIProVE—number 399922375). The statements and information in this contribution do not necessarily represent the opinion of DFG.
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