A robust Transfer Path Analysis method for steering gear vibrations on a test bench

M. Van Der Seijs, E. Pasma, D. De Klerk, D. Rixen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

15 Scopus citations

Abstract

This paper presents a Transfer Path Analysis (TPA) method to predict the transmission of steering gear vibrations of BMW vehicles in a multi-kHz range. The blocked-force TPA concept is used, allowing the active steering system to be measured separately from the vehicle. Compared to classical TPA methods, the blocked-force approach offers possibilities for component-wise optimisation and rapid evaluation of design changes. Crucial for the blocked-force TPA method is the correct determination of the dynamic forces and moments at the interface between the steering gear in operation and the test bench. Using a Dynamic Substructuring approach, various procedures are derived that theoretically lead to the same interface loads. The first procedure relies on direct force measurement corrected for test bench flexibility; the second on a matrix-inverse procedure on an assembly level. By comparing their results before proceeding with the TPA, one is able to make a robust estimation with a good grip on the uncertainty. The operations to obtain the required dynamics of the active component, the test bench and its assembly are reported in a step-by-step way. Quality indicators are introduced for each step in the analysis. The presented methods are validated by means of a comparison with the acoustic levels that were measured directly in the car under the same operational conditions.

Original languageEnglish
Title of host publicationProceedings of ISMA 2014 - International Conference on Noise and Vibration Engineering and USD 2014 - International Conference on Uncertainty in Structural Dynamics
EditorsP. Sas, D. Moens, H. Denayer
PublisherKU Leuven
Pages3967-3980
Number of pages14
ISBN (Electronic)9789073802919
StatePublished - 2014
Event26th International Conference on Noise and Vibration Engineering, ISMA 2014, Including the 5th International Conference on Uncertainty in Structural Dynamics, USD 2014 - Leuven, Belgium
Duration: 15 Sep 201417 Sep 2014

Publication series

NameProceedings of ISMA 2014 - International Conference on Noise and Vibration Engineering and USD 2014 - International Conference on Uncertainty in Structural Dynamics

Conference

Conference26th International Conference on Noise and Vibration Engineering, ISMA 2014, Including the 5th International Conference on Uncertainty in Structural Dynamics, USD 2014
Country/TerritoryBelgium
CityLeuven
Period15/09/1417/09/14

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