Reconstruction of Pediatric Occupant Kinetic Responds Using Finite Element Method in a Real-world Lateral Impact Accident

Paper #:
  • 2017-01-1462

Published:
  • 2017-03-28
Abstract:
Computational human body models, especially detailed finite element models are suitable for investigation of human body kinetic responds and injury mechanisim. A real-world lateral vehicle-tree impact accident was reconstructed by using finite element method according to the accident description in the CIREN database. At first, a baseline vehicle FE model was modified and validated according to the NCAP lateral impact test. The interaction between the car and the tree in the accident was simulated using LS-Dyna software. Patameters that affect the simulation results, such as the initial pre-crash speed, impact direction, and the initial impact location on the vehicle, was analyzed. The parameters were determined by matching the simulated vehicle body deformations and kinematics to the accident reports. Secondly, the output speed and acceleration of rear seat from the vehicle-tree simulation were directly applied to a simplified occupant-seat system using CHARM-10 model to simulate the occupant-vehicle interaction. The head impact location and severity from the simulation results were compared with the head injury description of that 10-year-old occupant. These results have shown that FE simulation using detailed pediatric occupant model can help in accident reconstruction and investigation of the pediatric injury in real-world impact accident. Key words Pediatric occupant, finite element model, accident reconstruction, kinematic responds
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