吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (2): 398-406.doi: 10.13229/j.cnki.jdxbgxb20161364

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Numerical analysis of human liver biomechanical response to blunt impacts

CHEN Ji-qing1, 2, DU Tian-ya1, 2, LAN Feng-chong1, 2   

  1. 1.School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640,China;
    2.Guangdong Provincial Key Laboratory of Automotive Engineering, South China University of Technology, Guangzhou 510640,China
  • Received:2016-12-15 Online:2018-03-01 Published:2018-03-01

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Abstract: Hepatic trauma induced in traffic accidents is one of the most common injury patterns, causing high fatality rate. Human liver biomechanical responses associated with frontal impacts, oblique impacts were studied using simplified Chinese human body Finite Element Model (FEM), assembling with more geometrical-accurate liver model and an average Chinese adult male model from high resolution CT data. The model was than applied for studying liver dynamic response and injuries in frontal and oblique pendulum impact simulations at low, middle and high velocities. Analysis of dynamic response and pressure distribution with high injury risk on liver was performed. Pressure and peak strain that may induce hepatic injuries were computed from the model simulations and were analyzed about the correlation with global parameters, such as thoracic deflection, viscous criterion value, contact force. It indicates that using single variable representing liver response is questionable under different loading boundaries.

Key words: vehicle engineering, liver injury, biomechanics, thoracic response, blunt impacts

CLC Number: 

  • U461.91
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