Comparative FE Analysis of Lower Extremity Injury for Hybrid III, THO/LX, and Human Model in NCAP Frontal Offset Crash

2005-01-0610

04/11/2005

Event
SAE 2005 World Congress & Exhibition
Authors Abstract
Content
Crash injuries in lower extremities are usually not fatal but may result in long-term impairment and immobility. Current understanding of these injuries is still quite limited from the biomechanical point of view. It is known that they occur often during frontal offset collisions in which intrusion of the toe pan and instrument panel frequently occur but are not always associated with their causation. Assessment of these injuries using the Hybrid III dummy is limited because of its limited biofidelic structure and inaccurate injury criteria. Accordingly, THOR-LX, the retrofit of the lower leg of the Hybrid III, has been introduced with an improved design for ankle motion and capacity of injury prediction. In this study, the different ankle joint characteristics and outcomes of both the Hybrid III and the THOR/LX have been quantitatively analyzed for an NCAP 40% offset crash with a small size sedan. A sub-structuring scheme of isolating the occupant compartment from the full car crash simulation was adopted in order to facilitate a parametric study in which various levels of structural deformation were utilized. Biomechanical injury assessment with an FE human body model was performed in addition to the dummy models to elucidate the associated injury mechanisms. The results of this study could be practically utilized for quantifying ankle joint injury outcomes from Hybrid III and THOR/LX dummies.
Meta TagsDetails
DOI
https://doi.org/10.4271/2005-01-0610
Pages
7
Citation
Ahn, C., Bae, H., Lee, J., Lee, I. et al., "Comparative FE Analysis of Lower Extremity Injury for Hybrid III, THO/LX, and Human Model in NCAP Frontal Offset Crash," SAE Technical Paper 2005-01-0610, 2005, https://doi.org/10.4271/2005-01-0610.
Additional Details
Publisher
Published
Apr 11, 2005
Product Code
2005-01-0610
Content Type
Technical Paper
Language
English