Automotive exhaust hangers are small oval shaped elastomeric elements used to suspend the exhaust system including the muffler to the body of a vehicle. Specific knowledge of the stiffness and damping properties of these bushings are important to estimate the dynamic forces transmitted to the vehicle body in order to predict interior noise and vibration levels. Different methodologies to test and analyze the dynamic stiffness (K) and damping (C) properties of serveral silicone and EDPM rubber automobile exhaust hangers were investigated in this research. One test method utilized a standard MTS elastomer test machine with a single sine excitation at discrete frequencies and amplitude levels, while a second method utilized an electrodynamic shaker with broadband excitation. Analyses techniques for extracting the equivalent stiffness and damping were developed in the shaker tests using data from time domain, frequency domain, as well as force transmissibility. A comparison of all of the shaker testing methods for repeatability and accuracy was done with the goal of determining the appropriate method that generates the most accurate results over the range of testing. The shaker testing in the frequency domain using a frequency response function model produced the most repeatable and accurate results when compared with the results obtained from the MTS machine with a sine sweep.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Measurement of dynamic parameters of automotive exhaust hangers


    Additional title:

    Messung der dynamischen Parameter von Kraftfahrzeugauspuffaufhängungen


    Contributors:
    Maikkula, P. (author) / Rao, M. (author) / Gruenberg, S. (author) / Griffiths, D. (author)


    Publication date :

    2000


    Size :

    8 Seiten, 7 Bilder, 2 Tabellen, 2 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Measurement of Dynamic Parameters of Automotive Exhaust Hangers

    Griffiths, Dave / Rao, Mohan D. / Gruenberg, Scott | SAE Technical Papers | 2001


    Cord-Reinforced Composite Exhaust Hangers for Optimizing NVH, Durability and Positioning in Automotive Applications

    Parker, Donald / Hahn, Ernst / Reihle, Joachim et al. | SAE Technical Papers | 2012


    Cord-Reinforced Composite Exhaust Hangers for Optimizing NVH, Durability and Positioning in Automotive Applications

    Reihle, J. / Steinmaier, K. / Hahn, E. et al. | British Library Conference Proceedings | 2012


    Plumbing line hangers

    KUMAR KC NAGESH / KUMAR SAMPATH KUMAR SATHISH / REDDY ATALA SUDHAKAR | European Patent Office | 2019

    Free access

    PLUMBING LINE HANGERS

    KUMAR KC NAGESH / KUMAR SAMPATH KUMAR SATHISH / REDDY ATALA SUDHAKAR | European Patent Office | 2019

    Free access