This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Frontal Impact Responsesof Generic Steel Front Bumper Crush Can Assemblies
Technical Paper
2014-01-0550
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The present investigation details an experimental procedure for frontal impact responses of a generic steel front bumper crush can (FBCC) assembly subjected to a rigid full and 40% offset impact. There is a paucity of studies focusing on component level tests with FBCCs, and of those, speeds carried out are of slower velocities. Predominant studies in literature pertain to full vehicle testing. Component level studies have importance as vehicles aim to decrease weight. As materials, such as carbon fiber or aluminum, are applied to vehicle structures, computer aided models are required to evaluate performance. A novel component level test procedure is valuable to aid in CAE correlation.
All the tests were conducted using a sled-on-sled testing method. Several high-speed cameras, an IR (Infrared) thermal camera, and a number of accelerometers were utilized to study impact performance of the FBCC samples. A linear potentiometer was installed next to each crush-can to directly measure crush length of the can. In addition, applied force upon impact was directly measured using load cells. The objective of this study is to examine the frontal-impact performance of an FBCC structure - as a component of a vehicle structure. This includes validating the data obtained from different devices such as accelerometer, load wall, potentiometer, and high-speed camera.
Comparison of displacement and velocity time-histories from video tracking and accelerometers showed good agreement. In addition, displacement time-histories of potentiometers and accelerometers were in good correlation. The results showed that the force time-histories obtained from Newton's second law and direct load measurements were in excellent agreement. Consistent deformation and failure modes were observed. Energy absorbed in each test was within a tight band as compared to the other tests. Heat was generated and dissipated at the can tip and further heating was observed as the can continued to fold.
Recommended Content
Authors
Topic
Citation
Seyed Yaghoubi, A., Begeman, P., Newaz, G., Board, D. et al., "Frontal Impact Responsesof Generic Steel Front Bumper Crush Can Assemblies," SAE Technical Paper 2014-01-0550, 2014, https://doi.org/10.4271/2014-01-0550.Also In
References
- Insurance Institute for Highway Safety analysis of National Highway Traffic Safety Administration's 2012 Fatality Analysis Reporting System January 2014
- The New Car Assessment Program Suggested Approaches for Future Program Enhancements National Highway Traffic Safety Administration Department of Transportation DOT HS 810 698 2007
- Crash Test Technology International Official Magazine of Crash Test EXPO North America September 2008
- Kim , S.B. , Huh , H. , Lee , G.H. , Yoo , J.S. et al. Design of the Cross Section Shape of an Aluminum Crash Box for Crashworthiness Enhancement of a Car International Journal of Modern Physics B 22 31 & 32 5578 5583 2008
- Lee , S-J , Lee H-A , Yi , S-I , Kim , D-S et. al. Design flow for the crash box in a vehicle to maximize energy absorption Journal of Automobile Engineering 227 2 179 200 2013
- Kokkula , S. , Langseth , M. , Hopperstad , OS , & Lademo , O-G Offset impact behaviour of bumper beam-longitudinal systems: experimental investigations International Journal of Crashworthiness 11 4 299 316 2006
- SAE International Surface Vehicle Recommended Practice Instrumentation for Impact Test SAE Standard J211 Oct. 1988