Development and Validation of a Finite Element Model of the Human Thoracic for Rib Fractures Prediction in Automobile Co
Thoracic trauma is a frequent occurrence in automotive collisions. A finite element human thorax model was developed for predicting thoracic Rib fractures and studying the injury mechanisms of thorax for automotive impact accidents. CT image and MRI image
- PDF / 1,432,175 Bytes
- 14 Pages / 439.37 x 666.142 pts Page_size
- 75 Downloads / 232 Views
Abstract Thoracic trauma is a frequent occurrence in automotive collisions. A finite element human thorax model was developed for predicting thoracic Rib fractures and studying the injury mechanisms of thorax for automotive impact accidents. CT image and MRI image of the human skeleton and internal organs were used to construct the three-dimensional finite element representation of the rib cage and internal organs. The model was created in the finite element code LS-DYNA. The mechanical properties of the biological tissues in this model were based on test data found in the literature. Several experimental studies have been performed to determine the material properties and force–deformation behaviors of the rib tissues under three-point bending or anterior-posterior loading, the full model was validated against post-mortem human subjects (PMHS)impact data responses for both frontal and lateral impact. Good correlation between the model and the cadaver responses were achieved for the force and deflection time-histories these models provide comparative tools for determining the thoracic response to automotive impact injury and can be used to evaluate Rib fractures and determined thoracic injury mechanism and assist with injury prevention in car crash safety research. Keywords Thorax finite element Thorax injury Injury analysis
Rib fracture Automotive impact accidents
F2012-FO4-001 Z. Cai (&) F. Lan J. Chen Guangdong Key Laboratory of Automotive Engineering, School of Mechanical and Automotive Engineering South China, University of Technology, Guangzhou, China F. Zhao Key Laboratory of Automobile Safety Technology, Geely Automobile Institute Zhejiang, Zhejiang, China
SAE-China and FISITA (eds.), Proceedings of the FISITA 2012 World Automotive Congress, Lecture Notes in Electrical Engineering 197, DOI: 10.1007/978-3-642-33805-2_31, Ó Springer-Verlag Berlin Heidelberg 2013
375
376
Z. Cai et al.
1 Introduction Thoracic trauma is a frequent occurrence in automotive collisions. Rib fracture is the most frequent type of thoracic injury, followed by the trauma of the pulmonary/lung, heart and liver [1]. Rib fractures are common thoracic injuries that can result in mortality and severe morbidity [2]. As the population continues to age worldwide, rib injury frequency and the associated morbidity and mortality will significantly increase since older drivers are more vulnerable to and more likely to die of chest injuries [3]. To simulate the occupants and pedestrian during the automotive impact accidents, dummies are currently used to represent the occupants and pedestrian. However, current dummies and dummy models lack the detailed information to predict the occupant and pedestrian injuries during a crash, especially rib fractures for the human thorax models, simplified geometry and non strain-rate material properties were used for the rib cage can not to simulate the rib fractures in an automotive crash. Therefore, a detailed finite element human thorax model with proper material properties and the capabil
Data Loading...
