Abstract
In car accidents abdominal organ injuries are frequently caused by seat belts which induce compression to the abdomen. Therefore much attention has been paid to reducing the injuries caused by the protection device. Accordingly there is a need for injury assessment tool abdominal organs. The purpose of this study is developing the injury analysis model that can be expressed liver damage state by the MPS (Moving Particle Semi-implicit) method. At first to represents the viscoelastic behavior of liver tissue, we modified the Navier-Stokes equations by adopting Voigt elements between every neighboring particles. Next we set the material properties of the liver by simulating tensile test and compression test using the simplified geometric model. Finally we conducted a simulation of the impact test of the liver. As a result the liver model represents a qualitatively the mechanical properties. However the Liver model has different maximum stress, it is not possible to quantitatively express the mechanical properties.
