Children from 6 to 12 year-old (YO) restrained in motor vehicles by seatbelts designed for adults often experience poor belt fit that results in adverse outcomes in crashes. Computer modelling provides a means to investigate the effects of body size on the injury risks in crashes beyond the few sizes of anthropomorphic test devices (ATDs) that are available. In this study, a parametric ATD model capable of representing 6–12 YO children was developed using MADYMO. A more realistic representation of pelvis and abdomen geometry, modified joint stiffness and improved contact characteristics were added to a MADYMO model of the Hybrid-III 6 YO ATD. The new parametric ATD model was validated against results from 12 sled tests using real second-row vehicle seats with Hybrid III 6 YO and 10 YO ATDs under different restraint configurations using a multi-objective optimisation method. The model validity was evaluated by statistical assessments of output measurements between the tests and simulations. Results showed that the model-predicted ATD head, chest and pelvis accelerations, as well as the seatbelt forces were in good agreement with those from the tests. This validated parametric child ATD model provides a useful tool to investigate the body size effects and to develop restraint system design guidelines for 6–12 YO child occupants.


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    Title :

    Development and validation of a parametric child anthropomorphic test device model representing 6–12-year-old children


    Contributors:
    Wu, Jun (author) / Hu, Jingwen (author) / Reed, Matthew P. (author) / Klinich, Kathleen D. (author) / Cao, Libo (author)

    Published in:

    Publication date :

    2012-12-01


    Size :

    15 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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