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Article

Approach for Calibrated Measurement of the Frequency Response for Characterization of Compliant Interface Elements on Vibration Test Benches

1
PKT—Institute of Product Development and Mechanical Engineering Design, Hamburg University of Technology (TUHH), Denickestraße 17, 21073 Hamburg, Germany
2
IPEK—Institute of Product Engineering, Karlsruhe Institute of Technology (KIT), Kaiserstrasse 10, 76131 Karlsruhe, Germany
*
Author to whom correspondence should be addressed.
Academic Editors: Andreas Sumper and Marco Troncossi
Appl. Sci. 2021, 11(20), 9604; https://doi.org/10.3390/app11209604
Received: 30 August 2021 / Revised: 1 October 2021 / Accepted: 12 October 2021 / Published: 15 October 2021
(This article belongs to the Special Issue Alternative Techniques in Vibration Measurement and Analysis)
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. View Full-Text
Keywords: dynamic calibration; vibration testing; measurement approach; mechanical impedance; compliant structures; adjustable impedance elements; frequency response function dynamic calibration; vibration testing; measurement approach; mechanical impedance; compliant structures; adjustable impedance elements; frequency response function
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MDPI and ACS Style

Heyden, E.; Lindenmann, A.; Matthiesen, S.; Krause, D. Approach for Calibrated Measurement of the Frequency Response for Characterization of Compliant Interface Elements on Vibration Test Benches. Appl. Sci. 2021, 11, 9604. https://doi.org/10.3390/app11209604

AMA Style

Heyden E, Lindenmann A, Matthiesen S, Krause D. Approach for Calibrated Measurement of the Frequency Response for Characterization of Compliant Interface Elements on Vibration Test Benches. Applied Sciences. 2021; 11(20):9604. https://doi.org/10.3390/app11209604

Chicago/Turabian Style

Heyden, Emil, Andreas Lindenmann, Sven Matthiesen, and Dieter Krause. 2021. "Approach for Calibrated Measurement of the Frequency Response for Characterization of Compliant Interface Elements on Vibration Test Benches" Applied Sciences 11, no. 20: 9604. https://doi.org/10.3390/app11209604

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