Correlation of airbag fabric material mechanical failure characteristic for out of position applications

C. Bastien, M. V. Blundell, D. Stubbs, J. Christensen, J. Hoffmann, M. Freisinger, R. Van Der Made

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding

    3 Citations (Scopus)

    Abstract

    The current paper will discuss airbag fabric mechanical failure characterisation in order to improve simulations of airbag behaviour for out-of position (OoP) occupant scenarios. This failure mechanism is necessary to represent the controlled failure of airbag internal tethers when drivers of different mass and stature are slumped over the steering wheel, thereby contacting the airbag module at the start of the airbag deployment. The high deployment forces associated with these scenarios are caused by the increasing gas pressure inside the airbag [1]. The methodology discussed involves the execution of physical static and dynamic tensile tests of an airbag fabric sample in warp, weft and bias directions. The airbag fabric permeability is derived and airbag module cover, tear seam rupture tests are performed. Mathematical simulations of airbag fabric with nonlinear fabric material characterisations are correlated to the test results. The physical airbag fabric failure is compared to various computer simulation techniques. The correlated airbag fabric models are used in simulations with 5th percentile female, 50th and 95th percentile male anthropomorphic test devices (ATD's) to demonstrate the pressure build up in the airbag chambers and provide additional knowledge of this phenomenon [2]. If a driver occupant exerts an extreme breaking intervention existing of horizontal deceleration, a 50th percentile ATD could end up in a sort of an OoP scenario with a posture close to the driver airbag module at the moment of airbag ignition. The presented study prepares this combination of active and passive safety (integrated safety) exploring the advanced driver airbag model behaviour by varying the occupant types (size) during initial OoP deployment.

    Original languageEnglish
    Title of host publicationProceedings of ISMA 2010 - International Conference on Noise and Vibration Engineering, including USD 2010
    EditorsP. Sas, B. Bergen
    PublisherKatholieke Universiteit Leuven
    Pages1679-1691
    Number of pages13
    ISBN (Electronic)9789073802872
    Publication statusPublished - 1 Jan 2010
    Event24th International Conference on Noise and Vibration Engineering, ISMA 2010, in conjunction with the 3rd International Conference on Uncertainty in Structural Dynamics, USD 2010 - Leuven, Belgium
    Duration: 20 Sep 201022 Sep 2010

    Publication series

    NameProceedings of ISMA 2010 - International Conference on Noise and Vibration Engineering, including USD 2010

    Conference

    Conference24th International Conference on Noise and Vibration Engineering, ISMA 2010, in conjunction with the 3rd International Conference on Uncertainty in Structural Dynamics, USD 2010
    CountryBelgium
    CityLeuven
    Period20/09/1022/09/10

    ASJC Scopus subject areas

    • Mechanical Engineering
    • Mechanics of Materials
    • Acoustics and Ultrasonics

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  • Cite this

    Bastien, C., Blundell, M. V., Stubbs, D., Christensen, J., Hoffmann, J., Freisinger, M., & Van Der Made, R. (2010). Correlation of airbag fabric material mechanical failure characteristic for out of position applications. In P. Sas, & B. Bergen (Eds.), Proceedings of ISMA 2010 - International Conference on Noise and Vibration Engineering, including USD 2010 (pp. 1679-1691). (Proceedings of ISMA 2010 - International Conference on Noise and Vibration Engineering, including USD 2010). Katholieke Universiteit Leuven.