Vibration shaker testing is a great tool of validating the vibration fatigue performance of automotive components & systems. However, the representative vibration schedule requires a pre-knowledge of the acceleration history for the test object, which usually is not available until the later development phase of a vehicle program when physical properties are available. Sometimes, a generic vibration schedule developed from the worst-case loading profiles are used with risk of lacking correlation with later full vehicle durability test such as Road Test Simulator (RTS) or Proving Ground (PG) road test due to the higher loading amplitude.This paper proposes a virtual accelerometer approach to collect acceleration responses of a component from a virtual vehicle model. First, a multiple body dynamic model will be produced for virtual load calculation over a series of digitalized virtual proving ground road profiles. These loads will be then applied on the virtual vehicle CAE model with all representative components & subsystems. Acceleration response for the system of interest is then extracted from modal transient dynamic analysis. Later, the acceleration history is converted to frequency domain, and the associated spectral damage calculation is conducted. The final vibration profile is developed based on the equivalent damage concept. The virtual acceleration acquisition and physical acceleration acquisition show good agreement in both time domain and frequency domain. The profile generated from virtual acceleration acquisition covers very well for the physical acceleration acquisition. Overall, virtual acceleration-based profile ensures the conservative shake test results for the example studied. Compared to the physical accelerometer, the virtual accelerometer can provide acceleration data economically and quickly in the early phase of the product development. The proposed approach will ensure the component shaker test is conducted using the meaningful and representative vibration load.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Virtual Accelerometer Approach to Create Vibration Profile for Automotive Component Shake Test


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    WCX SAE World Congress Experience ; 2023



    Publication date :

    2023-04-11




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Virtual Accelerometer Approach to Create Vibration Profile for Automotive Component Shake Test

    Zhang, Weidong / Wang, Liang / Feng, Guanmin et al. | British Library Conference Proceedings | 2023


    Base Shake Vibration Test Facility Verification Test Article Design Considerations

    E. L. Pierson / V. J. Suarez / T. E. Lyons et al. | NTIS | 2023


    Base Shake Vibration Test Facility Verification Test Article Design Considerations

    Emma L Pierson / Vicente J Suarez / Troy E Lyons et al. | NTRS



    METHOD AND APPARATUS FOR PERFORMING VIBRATION SHAKE TEST OF SATELLITES

    IM JONG MIN / WOO SUNG HYUN / EUN HEE KWANG et al. | European Patent Office | 2021

    Free access