| EFFECTS OF IMPACT LOCATION, IMPACT ANGLE AND
IMPACT SPEED ON HEAD INJURY RISK OF VIETNAMESE
PEDESTRIAN HIT BY A SEDAN |
| Ly Hung Anh 1,2, Phu Thuong Luu Nguyen 3, Ngo Anh Vu 1,2 |
1Department of Aerospace Engineering, Faculty of Transportation Engineering
2Viet Nam National University Ho Chi Minh City
3Faculty of Automotive Engineering, School of Engineering and Technology |
|
|
|
|
|
|
|
| ABSTRACT |
|
This paper employed finite-element simulation together with a human body model (HBM) - THUMS to study
the head injury risk of a pedestrian involved in a frontal impact with a sedan car. While previous studies have gained an
intensive understanding of the effects of various factors on pedestrian injury, their results were mainly based on
standard-sized HBMs. Hence, a scaling procedure was first applied for the THUMS to obtain a model that possesses
Vietnamese anthropometry. A total of thirty simulations were conducted to investigate the effect of various parameters,
including impact angle, impact location, and impact speed, on the head injury criterion (HIC) of the scaled THUMS. Besides,
each simulation covered not only the car-to-pedestrian impact but also the pedestrian-to-ground impact. Thus, the head injury
of the pedestrian in both primary impact and secondary impact could be evaluated. Results showed that HIC increased
consistently with impact speed for primary impact. An impact at the center of the car was more critical than that at the corner.
Whereas, the effect of impact angle varied depending on the impact location. Regarding the secondary impact, HIC value was
found to be highly sensitive to the posture of the pedestrian before impacting to the ground. In most cases, HIC was much
higher in secondary impact than in primary impact. In other words, secondary impact poses a high risk of fatality to
pedestrians in a traffic accident. |
| Key Words:
Head injury criterion, Pedestrian, Sedan, Collision, Injury risk |
|
|
|
Corresponding Author.
Ly Hung Anh , Email. 
Preview
Full text via DOI
Download Citation 
Print 
