Investigation of the vehicle restraint system in a frontal impact

In this study, a comprehensive theoretical model of an in-position occupant restrained by seatbelt and airbag in an in-line frontal vehicle barrier impact is proposed. A novel approach is adopted in formulating the occupant motion based on occupant interaction with the seatbelt and airbag. Also, the...

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Bibliographic Details
Published inInternational journal of crashworthiness Vol. 22; no. 6; pp. 662 - 675
Main Authors Thanigaivel Raja, T., Swain, Abinash Kumar
Format Journal Article
LanguageEnglish
Published Cambridge Taylor & Francis 02.11.2017
Taylor & Francis Ltd
Subjects
Air bags
airbag
Computer applications
Computer simulation
Crashworthiness
Deceleration
Frontal impact
Genetic algorithms
Impact strength
Linear programming
Mixed integer
Nonlinear programming
occupant deceleration
optimisation
Optimization
Restraint systems
Seatbelt
System identification
vehicle crash
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Summary:In this study, a comprehensive theoretical model of an in-position occupant restrained by seatbelt and airbag in an in-line frontal vehicle barrier impact is proposed. A novel approach is adopted in formulating the occupant motion based on occupant interaction with the seatbelt and airbag. Also, the airbag model developed in this paper simulates for airbag deflation both before and during occupant interaction. The proposed model is validated against test results by the system identification method through parameter optimisation. The optimisation problem is stated as a mixed integer non-linear programming problem to be solved by genetic algorithm. The results obtained with the proposed model are in good agreement with test results with a root mean square deceleration error of 0.13837 g. Furthermore, the computational time for the model has been estimated to be exceptional.
ISSN:1358-8265
1573-8965
1754-2111
DOI:10.1080/13588265.2017.1301071