Modeling and experimental verification of rapid inversion model of living body based on FEM model
OBJECTIVE: This study aims to verify the practicability and accuracy of a finite element model (FEM) built using digital human model construction and to apply the model to actual explosion impact inversion. METHOD: We proposed a simplified rapid inversion model using digital human modeling. In modeling, cell mesh generation was performed using preprocessing software (ANSYS ICEM CFD), measured organism data were used as the corresponding geometrical parameters of all specified parts, and material characteristics parameters were set according to tissue characteristics. FEM construction was completed in the ANSYS LS-DYNA software and verified by an equivalent experiment. RESULTS: The rapid inversion FEM was built by employing digital human model construction. Through analysis, it was concluded that the calculation result was practically consistent with the experimental result. CONCLUSIONS: By creating the digital human model based on a CT dataset, the FEM inversion model of an approximately actual material environment can be rebuilt, and the model can be used to study human thorax injury characteristics.