MULTIBODY MODEL ADAPTATION FOR SIMULATING HELMET AIRBAGS IN VEHICLE-CYCLIST ACCIDENTS

Ovidiu Andrei CONDREA, Anghel CHIRU, Daniel Dragos TRUSCA

Abstract


In this study a multibody model of a helmet airbag was developed in PC Crash and used to simulate a vehicle-cyclist crash-test. The helmet airbag was generated in its deployed form as a multibody assembly comprised of four articulated bodies, which was further used to simulate the experimental test. The airbag model was attached to the cyclist multibody model through a fixed joint representing the zipper system through which the airbag is retained onto the neck. Regarding the peak head accelerations obtained, a 4% error was recorded between the crash-test and the simulation, which shows that the multibody model of the helmet airbag can be used for reconstructing head impacts with reasonable accuracy.


Keywords


Cyclist impact; Helmet airbag; Helmet airbag simulation; Multibody simulation

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