Analysis of vehicle structural performance during small-overlap frontal impact

This paper presents an analysis of the vehicle structural performance in the event of a small-overlap frontal impact (SOFI), based on a computer-based crash simulation model. The vehicle model was used for SOFI simulation according to real small-overlap test conditions. The crash simulation results were used to evaluate the overall vehicle structure through a comparison of intrusion measurements with the rating guidelines of the Insurance Institute for Highway Safety. The parts sensitive to a small-overlap crash were confirmed. Thickness optimization was conducted to strengthen the rocker panel, A-pillar, and lower hinge pillar in order to improve the vehicle structural performance in the event of a SOFI. The best values among the variables were chosen for the new design. The crash analysis using finite element models showed that the most serious deformation occurred to the A-pillar. In this study, the grade of the overall structure was changed from “poor” to “marginal”.

[1]  Richard M. Morgan,et al.  A Study of the IIHS Frontal Pole Impact Test , 2008 .

[2]  Frank A. Pintar,et al.  Classifiers to Augment the CDC System to Distinguish the Role of Structure in a Frontal Impact Taxonomy , 2012 .

[3]  J. S. Kim,et al.  Effect of punch angle on energy absorbing characteristics of tube-type crash elements , 2011 .

[4]  Tomosaburo Okabe,et al.  An Investigation of Injury Factors Concerning Drivers in Vehicles Involved in Small-Overlap Frontal Crashes , 2012 .

[5]  Lotta Jakobsson,et al.  Severe Frontal Collisions with Partial Overlap - Two Decades of Car Safety Development , 2013 .

[6]  P. Urbina,et al.  Crashworthiness design based on a simplified deceleration pulse , 2014 .

[7]  Becky C Mueller,et al.  Development of a Frontal Small Overlap Crashworthiness Evaluation Test , 2013, Traffic injury prevention.

[8]  Jerry Wekezer,et al.  Effectiveness of ECE R66 and FMVSS 220 standards in rollover crashworthiness assessment of paratransit buses , 2014 .

[9]  Raphael Murri,et al.  Relevance of the IIHS Small Overlap Crash Test in Europe , 2014 .

[10]  Azim Eskandarian,et al.  National Crash Analysis Center , 1994 .

[11]  David S. Zuby,et al.  Repeatability of IIHS small overlap frontal crash tests , 2013 .

[12]  David S. Zuby,et al.  Impact and Injury Patterns in Frontal Crashes of Vehicles with Good Ratings for Frontal Crash Protection , 2009 .

[13]  H. J. Yim,et al.  Robust design optimization of frontal structures for minimizing injury risks of Flex Pedestrian Legform Impactor , 2014 .

[14]  H.-C. Sin,et al.  SIZE OPTIMIATION OF AN ENGINE ROOM MEMBER FOR CRASHWORTHINESS USING RESPONSE SURFACE METHOD , 2007 .