Source characterization for automotive applications using innovative techniques

J. Harvie, D. de Klerk

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

Transfer path analysis (TPA) and source characterization using the in-situ blocked force methodology is becoming increasingly common in the automotive world. While robust techniques exist for this type of characterization in general, there are certain conditions where the analysis is more straight-forward than others. In this work, several techniques are presented to help improve the characterization across different frequency ranges. At the very low frequencies, where structures should behave rigidly, TPA results can be improved by filtering out any non-rigid body motion from a set of measured FRFs. In the mid-frequency range, testing can be simplified using a volume source to capture reciprocal FRFs and then predict sound levels at the driver’s ear. In the mid- and high- frequency ranges, the addition of rotational FRFs can help improve TPA predictions. These techniques are demonstrated using recent test results on various components and vehicles in this paper.

Original languageEnglish
Title of host publicationDynamic Substructures
Subtitle of host publicationProceedings of the 38th IMAC, A Conference and Exposition on Structural Dynamics, 2020
EditorsAndreas Linderholt, Matt Allen, Walter D’Ambrogio
Place of PublicationCham, Switzerland
PublisherSpringer
Chapter10
Pages117-125
Volume4
ISBN (Electronic)978-3-030-47630-4
ISBN (Print)978-3-030-47629-8
DOIs
Publication statusPublished - 2021
Event38th IMAC, A Conference and Exposition on Structural Dynamics, 2020 - Houston, United States
Duration: 10 Feb 202013 Feb 2020

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

Conference38th IMAC, A Conference and Exposition on Structural Dynamics, 2020
CountryUnited States
CityHouston
Period10/02/2013/02/20

Keywords

  • Automotive
  • Blocked forces
  • Frequency response functions
  • Transfer path analysis

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