CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Investigation of head injuries by reconstructions of real-world vehicle-versus-adult-pedestrian accidents

Jianfeng Yao (Institutionen för tillämpad mekanik, Fordonssäkerhet) ; Jikuang Yang (Institutionen för tillämpad mekanik, Fordonssäkerhet) ; Dietmar Otte
Safety Science (0925-7535). Vol. 46 (2008), 7, p. 1103-1114.
[Artikel, refereegranskad vetenskaplig]

A sizeable proportion of adult pedestrians involved in vehicle-versus-pedestrian accidents suffer head injuries, some of which can lead to lifelong disability or even death. To understand head injury mechanisms, in-depth accident analyses and accident reconstructions were conducted. A total of 120 adult pedestrian accident cases from the GIDAS (German In-Depth Accident Study) database were analysed, from which 10 were selected for reconstruction. Accident reconstructions initially were performed using multi-body system (MBS) pedestrian and car models, so as to calculate head impact conditions, like head impact velocity, head position and head orientation. These impact conditions then were used to set the initial conditions in a simulation of a head striking a windshield, using finite element (FE) head and windshield models. The intracranial pressure and stress distributions of the FE head model were calculated and correlated with injury outcomes. Accident analysis revealed that the windshield and its surrounding frames were the main sources of head injury for adult pedestrians. Reconstruction results indicated that coup/contrecoup pressure, Von Mises and shear stress were important physical parameters to estimate brain injury risks.

Nyckelord: Pedestrian safety, accident reconstruction, head injury, mathematical simulation


Elsevier



Denna post skapades 2008-12-12. Senast ändrad 2016-09-23.
CPL Pubid: 81298

 

Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Fordonssäkerhet (2005-2017)

Ämnesområden

Farkostteknik

Chalmers infrastruktur