Finite Element Aortic Injury Reconstruction of Near Side Lateral Impacts Using Real World Crash Data

Abstract

Traumatic rupture of the aorta (TRA) remains the second most common cause of death associated with motor vehicle crashes, only less prevalent than brain injury. On average, nearly 8000 people die annually in the United States due to blunt injury to the aorta. It is observed that over 80% of occupants who suffer an aortic injury die at the scene due to exsanguination into the chest cavity. In the current study, eight near side lateral impacts, in which TRA occurred, were reconstructed using a combination of real world crash data reported in the Crash Injury Research and Engineering Network (CIREN) database, finite element (FE) models of vehicles, and the Wayne State Human Body Model - II (WSHBM). For the eight CIREN cases reconstructed, the high strain regions in the aorta closely matched with the autopsy data provided. The peak average maximum principal strains in all of the eight CIREN cases were localized in the isthmus region of the aorta, distal to the left subclavian artery, and averaged at 22 ± 6.2% while the average maximum pressure in the aorta was found to be 117 ± 14.7 kPa.

Computational Modeling of Traffic Related Thoracic Injury of a 10-Year-Old Child Using Subject-Specific Modeling Technique

“…The average discrepancy was 7.9%, which was within the acceptable value of discrepancy in similar accident reconstructions. 3 Based on the information in the CIREN database (ID 118285), the subject-specific 10-YO model was morphed from the baseline model, as described in ''Subject-Specific Model Development'' section. The seat frame model was created according the actual angle and height of the seat in the 2005 KIA Sedona.…”

Finite Element Model Prediction of Pulmonary Contusion in Vehicle-to-Vehicle Simulations of Real-World Crashes

“…Siegel et al (2010) and Belwadi et al (2012) have investigated aortic injury in MVC using CIREN cases. The simulations were then evaluated for strain and pressure within the aorta.…”

Development and Validation of an Occupant Biomechanical Model for the Aortic Injury Analysis under Side Impacts

“…The advancement of computer-aided techniques provides opportunity to study the aortic injuries by numerical methods. Some researchers developed models of isolated aorta, part or full human body to investigate the injury mechanisms of occupants' aorta in side impacts [9][10][11][12][13][14][15][16]. In 2001, Shah et al improved a thorax model developed by predecessor to study the aortic injury [9].…”

“…In 2001, Shah et al improved a thorax model developed by predecessor to study the aortic injury [9]. And then, Shah et al (2005) [ [11] and Belwadi et al (2012) [12], utilized the WSHM to investigated TRA in side collisions and proposed some protective countermeasures. Some numerical simulations about the isolated aorta are as follows.…”