automobile-2016_scientifictracks-abstracts

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Volume 5, Issue 2(Suppl) Adv Automob Eng 2016
ISSN: 2167-7670, AAE an open access journal
Page 46
Notes:
Automobile 2016
December 01-02, 2016
conferenceseries.com
Automobile Engineering
December 01-02, 2016 Valencia, Spain
2nd International Conference and Exhibition on
Structural transfer path analysis using normal frequency response functions
Akin Oktav, Cetin Yilmaz and Gunay Anlas
Bogazici University, Turkey
Structural transfer path analysis describes the total interior sound pressure level as a vector sum of individual contributions from
the powertrain force inputs entering the unibody over the engine and exhaust mounts. In this work, a hybrid transfer path analysis
method that utilizes computational and experimental studies is proposed. Computational transfer path analysis is important to
achieve modification studies, but the frequency response functions obtained do not contain the damping information. On the other
hand, complex frequency response functions measured during the experimentation have the damping information embedded in.
However, it is possible to separate damping form the frequency response functions measured. These damping free functions are
called as normal frequency response functions. Correlation is made between the undamped computational model of the structure
and normal frequency response functions derived from experimental transfer path analysis study. The proposed method essentially
makes use of the viscous damping identified in the experimental step. Viscous damping data are computed separately and imposed on
the final computational model. In this talk, important advantages of the method and a reference application will be presented. Results
of the application demonstrate that the method proposed works well with real problems.
Biography
Akin Oktav received his PhD degree in Mechanical Engineering from Bogazici University. Currently, he is working as a Specialist in the Vibration and Acoustics Laboratory
of Bogazici University. His research interests include structural model updating, vehicle noise variability, identification of damping and modification for vehicle acoustic
problems.
Akin Oktav et al., Adv Automob Eng 2016, 5:2(Suppl)