Abstract Objective With widely usage of restraint system, fatal injuries to occupants have been largely limited while non-fatal lower extremity injuries have not been effectively improved. The present study aims to investigate occupant lower extremity injuries under realistic impact environments. Methods A biofidelic lower extremity model, a dummy model and a car cab model were combined to set up a realistic impact environment. Three typical frontal impact groups were simulated. Occupant global lower kinematics, long bone axial force and bending moment were presented to in-depth investigate lower extremity injury mechanism and tolerance. Results Various overlap frontal impacts cause totally different lower extremity kinematics in the combination of structural invasion and restraint system effects. The femur fracture occurred at a small axial force of 7.57 kN combing a substantial bending moment peak of 172 Nm. Ankle joint injuries were found in 100 % and 25 % overlap impacts that present large tibial axial force and joint rotation angle. Conclusions Overall results indicate that a coupling threshold of femur axial force and bending moment is of rationality to predict global femur fracture. The ankle joint injury occurrence is significantly related to the coupling effects of tibia axial force and excessive self-kinematics.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Investigation of Occupant Lower Extremity Injures under Various Overlap Frontal Crashes


    Contributors:
    Mo, Fuhao (author) / Duan, Shuyong (author) / Jiang, Xiaoqing (author) / Xiao, Sen (author) / Xiao, Zhi (author) / Shi, Wei (author) / Wei, Kai (author)

    Published in:

    Publication date :

    2018-02-27


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Investigation of Occupant Lower Extremity Injures under Various Overlap Frontal Crashes

    Mo, Fuhao / Duan, Shuyong / Jiang, Xiaoqing et al. | Online Contents | 2018


    Lower Extremity Loads in Offset Frontal Crashes

    Zuby, D. S. / Farmer, C. M. | British Library Conference Proceedings | 1996


    Improving occupant protection systems in frontal crashes

    Hollowell,W.T. / Stucki,S.L. / National Highway Traffic Safety Administration,NHTSA,US | Automotive engineering | 1996


    Improving Occupant Protection Systems in Frontal Crashes

    Stucki, Sheldon L. / Hollowell, William T. | SAE Technical Papers | 1996


    Lower Extremity Injuries in Frontal Crashes: Injuries, Locations, AIS and Contacts

    Compton, Charles P. / Huelke, Donald F. / Compton, Timothy W. | SAE Technical Papers | 1991