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Prominence of Different Directions of Hub Forces and Moments in Structure-Borne Tire Noise
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.ORCID iD: 0000-0002-7048-523X
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.ORCID iD: 0000-0002-2237-878X
2015 (English)In: SAE International Journal of Passenger Cars - Mechanical Systems, ISSN 1946-3995, E-ISSN 1946-4002, Vol. 8, no 1, p. 346-353, article id 2015-01-9106Article in journal (Refereed) Published
Abstract [en]

In the automotive industry, tire noise is an important factor for the perceived quality of a product. A useful method to address such NVH problems is to combine recordings with measurements and/or simulations into auralizations. An example of a method to create structure-borne tire noise auralizations is to filter recordings of hub forces and moments through binaural transfer functions experimentally measured from the hub of the car to an artificial head in the car cabin. To create authentic auralizations of structure-borne sound, all six degrees of freedom (DOFs) of hub forces and moments and transfer functions should be included. However, rotational DOFs are often omitted due to measurement difficulty, complexity, time, and cost. The objective was to find which DOF (or DOFs) is perceived as most prominent in structure-borne tire noise. An auralization model of interior structure-borne tire noise was used. An auralization including all DOFs was compared with auralizations lacking one DOF at a time in a listening test. Auralizations lacking either all translational DOFs or all rotational DOFs were also included. Results from the listening test showed that the overturning moment (Mα) was perceived as the most prominent DOF. Removing all rotational DOFs led to a larger audible difference than removing all translational DOFs. Therefore, rotational DOFs should not be disregarded in tire noise auralization. The results suggest which DOFs are important to consider in tire and vehicle sound design.

Place, publisher, year, edition, pages
2015. Vol. 8, no 1, p. 346-353, article id 2015-01-9106
National Category
Fluid Mechanics and Acoustics
Research subject
Engineering Acoustics
Identifiers
URN: urn:nbn:se:ltu:diva-7458DOI: 10.4271/2015-01-9106ISI: 000421797800037Scopus ID: 2-s2.0-84983388025Local ID: 5d76ee8d-1191-438f-982e-721898ac9a25OAI: oai:DiVA.org:ltu-7458DiVA, id: diva2:980347
Projects
CASTT - Centre for Automotive Systems Technologies and Testing
Note
Validerad; 2016; Nivå 1; 20151210 (lofmag)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Löfdahl, MagnusNykänen, ArneJohnsson, Roger

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