This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Crash Response of a Repaired Vehicle - Influence of Welding UHSS Members
Technical Paper
2020-01-0197
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Automakers generally recommend not to weld structural parts after a vehicle crash, and these should be replaced as a whole part in case of a crash event. Sectioning of these members is also not recommended and use of the repair manual is mandatory in case of fracture of such parts. However, repair shops may not adhere to these instructions and use incorrect repair procedures on these members which would modify their strength properties. This study analyses the impact of welding structural members in a vehicle like the A-pillar which use Ultra-High Strength Steels (UHSS) for reducing the weight of the vehicle and improving the crashworthiness of the structure. The research conducted in this paper highlights the differences in the crash performance of a repaired vehicle as opposed to baseline injury values for the vehicle. The performance of the modified vehicle when tested for different loadcases shows reduced crash performance as compared to the baseline performance and it can be concluded that welding or sectioning the UHSS parts would influence the crashworthiness of a vehicle. This paper only focuses on structural integrity of the repaired vehicle in a crash event. The performance of the vehicle in occupant injury is kept out of scope for this study.
Authors
Topic
Citation
Noorsumar, G., Robbersmyr, K., Rogovchenko, S., and Vysochinskiy, D., "Crash Response of a Repaired Vehicle - Influence of Welding UHSS Members," SAE Technical Paper 2020-01-0197, 2020, https://doi.org/10.4271/2020-01-0197.Also In
References
- Prasad, P. and Belwafa, E.J. , “Vehicle Crashworthiness and Occupant Protection,” American Iron and Steel Institute.
- Aarts, L.T., Commandeur, J.J.F., Welsh, R., Niesen, S., Lerner, M., Thomas, P., Bos, N., and Davidse, R.J. , “Study on Serious Road Traffic Injuries in the EU,” European Commission, October 2016.
- Li, Z., Yu, Q., Zhao, X., Yu, M. et al. , “Crashworthiness and Lightweight Optimization to Applied Multiple Materials and Foam-Filled Front End Structure of Auto-Body,” Advances in Mechanical Engineering 9(8):1-21, 2017.
- Chen, G. and Aleksy, A.K. , “Influence of AHSS Part Geometric Features on Crash Behavior,” SAE Technical Paper 2006-01-1588, 2006, https://doi.org/10.4271/2006-01-1588.
- https://www.worldautosteel.org/steel-basics/automotive-steel-definitions/.
- Huang, L., Kuo, M., and Yan, B. , “AHSS Application in Roof Strength,” SAE Technical Paper 2007-01-0339, 2007, https://doi.org/10.4271/2007-01-0339.
- Kah, P., Pirinen, M., and Suoranta, R. , “Welding of Ultra High Strength Steels,” Advanced Materials Research, January 2014, doi:10.4028/www.scientific.net/AMR.849.357.
- Schmortte, U. , “Crash-Rest Results to Analyse the Impact of Non-Professional Repair on Performance of Side Structure of a Car,” Paper Number 11-0310, 2011.
- Michael, S., Ralf, S., and Friedrich, H.E. ,“Methodological Approach for Reducing Computational Costs of Vehicle Frontal Crashworthiness Analysis by Using Simplified Structural Modelling,” International Journal of Crashworthiness, ISSN: 1358-8265 (Print), 1754-2111 (Online) Journal, 2017.
- Tripathy, B. and Vanimisetti, S. “The Beam-Grid: Development of a Dull Vehicle Reduced Order Model for Frontal, Offset and Side Impact” in FISITA World Automotive Congress, Chennai, India, 2018.
- Liu, Y.C. , “Development of Simplified Truck Chassis Model for Crash Analysis in Different Impact Scenarios,” International Journal of Crashworthiness 15:457-467, 2010.
- https://www.nhtsa.gov/crash-simulation-vehicle-models.
- Singh, H., Kan, C.-D., Marzougui, D., and Quong, S. , “Update to Future Midsize Lightweight Vehicle Findings in Response to Manufacturer Review and IIHS Small-Overlap Testing,” Report No. DOT HS 812 237, National Highway Traffic Safety Administration, Washington, DC, February 2016.
- “Small Overlap Frontal Crashworthiness Evaluation Crash Test Protocol (Version VI).”