Numerical analysis of human liver biomechanical response to blunt impacts

作者：Chen, Ji-Qing; Du, Tian-Ya; Lan, Feng-Chong^*

来源：Journal of Jilin University (Engineering and Technology Edition), 2018, 48(2): 398-406.

DOI：10.13229/j.cnki.jdxbgxb20161364

• Biomechanical response
• Blunt impacts
• Global parameters
• High resolution CT
• Impact simulation
• Liver injuries
• Thoracic response
• Vehicle engineering

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.

• 出版日期2018-3-1
• 单位华南理工大学