Browse Publications Technical Papers 2013-01-0456
2013-04-08

Experimental Validation of Pediatric Thorax Finite Element Model under Dynamic Loading Condition and Analysis of Injury 2013-01-0456

Previously, a 10-year-old (YO) pediatric thorax finite element model (FEM) was developed and verified against child chest stiffness data measured from clinical cardiopulmonary resuscitation (CPR). However, the CPR experiments were performed at relatively low speeds, with a maximum loading rate of 250 mm/s. Studies showed that the biomechanical responses of human thorax exhibited rate sensitive characteristics. As such, the studies of dynamic responses of the pediatric thorax FEM are needed.
Experimental pediatric cadaver data in frontal pendulum impacts and diagonal belt dynamic loading tests were used for dynamic validation. Thoracic force-deflection curves between test and simulation were compared. Strains predicted by the FEM and the injuries observed in the cadaver tests were also compared for injury assessment and analysis.
This study helped to further improve the 10 YO pediatric thorax FEM. The results of the injury analysis demonstrated that the validated FEM could be useful for predicting pediatric thoracic injuries, thus providing a potential tool for pediatric safety countermeasure development.

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