The Development Of Finite Element Model Of The Occupant Abdomen-thorax And The Injury Analysis

The casualty caused by car crash accidents has become the public nuisance in the world.In recent years, with the economical development and the stable increase of auto sales, thecasualty caused by road traffic accidents has been on growing trend, while injury on chest andabdomen takes up the largest proportion in the passenger casualty. Thus, it is of greatimportance to investigate into the chest and abdominal injury in the car crash accidents andthe relative precautions.The main purpose of this paper is to establish a Finite Element Model of chest andabdomen with human anatomy structure and apply it to the research of chest and abdominalinjury in the car trash accidents, providing basis for the precautions improvement andlegislation.Reviewing the relative literature, this paper summarizes the chest-abdominal anatomystructure, injury type, injury mechanism, injury standard and tolerance limits, providingtheoretical basis for the FEM establishment and dynamical response in the chest-abdominalinjury. The geometrical data of human body50percentile can be accessed via CT andprofessional medical software. Since the dynamical response in the crash is a process of bigdeformation and displacement, the nonlinear dynamic explicit finite element method isutilized to establish the chest-abdominal biometrical FEM. The FEM is a human bodyanatomy structure, consisting of rib, breastbone, vertebra, collarbone, scapula, pelvis, etc, andheart, lung, liver, kidney, pancreas, spleen, stomach, etc.The accuracy of different organic material parameters has a great influence on thebiological simulation in the establishment of FEM. With the purpose to gain the actual bodyorganic material parameters, the paper conducted the relative animal organ experiment,making reverse engineering to skeleton tissue material parameter in combination of finiteelement and optimization. The result proved that the parameter gained by reverse engineeringis able to improve the biological simulation.The pulley experiment simulation model on when passengers are strained by the safe belt is established in order to investigate into the chest-abdominal injury in car trash. Comparingwith the standard foreign corpse experiments, the effectiveness of the model is verified. At thesame time, the paper also researches on the chest-abdominal injury under different safe beltdesign parameters in car crash, providing theoretical basis for whole vehicle crash safety, theoptimization of protective equipment and the legislation of relative laws and rules.This paper establishes and verifies a chest-abdominal finite element model with humananatomy structure through the research on the above contents, which can be used toinvestigate into the passenger chest-abdominal injury in car crash.