| ESTIMATION OF WHOLE-BODY INJURY METRICS FOR EVALUATING
EFFECT OF AIRBAG DEPLOYMENT |
| Taewung Kim 1, Kihoon Song 1, Seok-ho Hong 2 |
1Department of Mechanical Design Engineering, Tech University of Korea
2Chassis & Safety Control Engineering Design Team, Hyundai Motor Group |
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| ABSTRACT |
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The current study aimed to develop a method for estimating whole-body injury metric values (WBIMs), which
are widely used in epidemiological studies, to determine airbag deployment threshold during frontal crashes using a
computational human surrogate model and real-world crash data. To this end, a finite element human body model was
instrumented to predict the risk of the injuries. The whole body was divided into 22 body regions. Then, body region-specific
injury pattern databases were constructed for these body regions using the NASS-CDS database. Monte Carlo Sampling was
performed to calculate WBIMs, such as the probability of death and lost years of life. A series of frontal crash simulations
was performed for various Delta-V with and without deploying pyrotechnic restraint systems. Lastly, the WBIM values
obtained from the proposed method were compared to those obtained from the NASS-CDS. From the Delta-V of 25 km/h,
the airbag-deployed conditions demonstrated a protective effect compared to the non-deployed conditions. The predicted
WBIM values using the proposed method demonstrated a similar trend to that presented in the field data. The proposed
method to estimate WBIM values can be used to evaluate various occupant protection systems. |
| Key Words:
Airbag threshold, Whole-body injury metric, Lost years of life, Human body model |
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Corresponding Author.
Taewung Kim , Email. 
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