B7: Computational Bioengineering IV

ARTERY RUPTURE SIMULATION OF THE HUMAN THIGH BY GUNSHOT THROUGH A FINITE ELEMENT METHOD


Young Nam Jo, Gil Ho Yoon, Hong Hee Yoo 

Hanyang University, South Korea


Gunshot injury is a great factor that affecting survivability of soldiers in battle field. When received gunshot wounds in the arm or leg, excessive bleeding is a significant cause of death. The purpose of the
present study is to conduct artery rupture simulation when received a gunshot wound in the thigh through a finite element method. 

To improve convergency and efficiency, the finite element model of a thigh is simplified into conic shape
based on human 3D scan data. Gelatin is commonly used in bullet penetration experiments as a substitute of human soft tissue. So, we assumed that properties of human flesh is equal to that of 10% gelatin. The properties of gelatin are obtained through a indentation test. In this study, Ansys was used for finite element analysis. Kelvin solid model and Maxwell fluid model is used as the linear viscoelastic model. Mie Gruneisen equation of state and Johnson Cook failure model is also used. The analysis method we used is validated by comparing deformation of gelatin penetration simulation with experiment. We simulated artery maximum elongation according to gunshot position and bullet velocity. And we calculate artery rupture probability when receive a gunshot wound in the thigh by using artery yield elongation experiment results of other reference. 

This study will useful to predict survivability of soldiers who received gunshot in the thigh. However, in this study, the simulation results is validated only in the case of bullet penetration of gelatin. So  validation of the analysis method we used need to be complemented. 

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