Investigations of Passenger Vehicle Vibration Behaviour as Basis for a Finite-Element Representation

Format:

Conference/Event

Author/Creator:

Bathelt, Bathelt, author.

Contributor:

Bukovics, Jürgen

Catchpole, Peter

Conference Name:

20th FISITA Congress (1984), Vienna, Austria (1984-01-01 : Vienna, Austria)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1984

Summary:

The problems that have until now prevented the practicalapplication of a Finite-Element (FE) calculation in passengervehicle acoustics are identified and their causes investigated.First of all, measurements of vibration scatter in "bodiesin white" and complete vehicles provided tolerances for theFE-Model prediction accuracy.The investigations in the dynamic properties of the totalvehicle's constituent parts and the subsequently based build upof the "body in white" FE-Model is seen to bedecisive.Measurements of a "body in white" and a completevehicle in a vacuum changer, to determine the effect of the airvibration on the structure vibration, led to important conclusionsin the FE-Model conception which strongly differ from formerrepresentations. Based on these results the validity of anuncoupled air-cavity-model excited with measured structurevibration has been tested, from which clear indications were givenat which points the structure model needs to be refined. In closeconnection with the problem of coupling between the structure andair cavity, physical causes were sought for the high damping of theair vibrations in the interior cavity model and if possible theseto harmonize with the model assumptions

Notes:

Vendor supplied data

Publisher Number:

845131

Access Restriction:

Restricted for use by site license