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Modelling of an Adjustable Generic Simplified Vehicle for Pedestrian Impact and Simulations of Corresponding Reference PMHS Tests Using the GHBMC 50th Percentile Male Pedestrian Simplified Model
Technical Paper
2018-22-0013
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Abstract
In a previous study (Song et al. 2017), an adjustable generic simplified vehicle buck was developed; eleven PMHS were impacted by the buck representing a SUV, a van and a sedan successively; and biofidelity corridors were established. The objectives of the current study were 1) to develop the computational model of the buck, and 2) to simulate these PMHS tests with the buck model and to assess the biofidelity of the GHBMC 50th percentile male pedestrian simplified model (GHBMC M50-PS). First, coupon tensile tests and static and dynamic compression tests were performed on the steel tubes representing the bonnet leading edge (BLE), the bumper and the spoiler used in the above PMHS tests. Based on these tests, the computational models of the above components were then developed and validated. Next, the buck model was built with the component models, and used to simulate the PMHS tests with the GHBMC M50-PS model. These simulations allowed to evaluate the biofidelity of the GHBMC M50-PS model in terms of 1) impact forces between the pedestrian and the buck, 2) pedestrian kinematics, and 3) injury outcome resulted. The model well predicted the total longitudinal impact force between the pedestrian and the buck for all three vehicle types, with a total CORA score between 0.72 and 0.78. However, the force distribution across the BLE, bumper and spoiler showed some significant deviations. The kinematic response of the model was rated as fair with a total CORA score ranging between 0.52 and 0.58. It seems necessary to increase the compliance of the GHBMC M50-PS model and its energy dissipation capability in order to achieve a better correlation of its kinematic response. Finally, the model predicted more knee ligament ruptures than observed in the PMHS tests, but less bone fracture of the femur and the fibula.
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Citation
Song, E., Petit, P., and Uriot, J., "Modelling of an Adjustable Generic Simplified Vehicle for Pedestrian Impact and Simulations of Corresponding Reference PMHS Tests Using the GHBMC 50th Percentile Male Pedestrian Simplified Model," SAE Technical Paper 2018-22-0013, 2018, https://doi.org/10.4271/2018-22-0013.Data Sets - Support Documents
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References
- Bose, D., et al. (2004) Response of the knee joint to the pedestrian impact loading environment. SAE 2004 World Congress, SAE Technical Paper #2004-01-1608 .
- Forman, J. L., et al. (2015) Biofidelity corridors for whole-body pedestrian impact with a generic buck. Proceedings of the IRCOBI Conference, 2015.
- Gehre C, Gades H, Wernicke P. Objective rating of signals using test and simulation responses. Paper presented at: 21th ESV Conference, June 15–18, 2009; Stuttgart, Germany.
- Gehre C, Stahlschmidt S. Assessment of dummy models by using objective rating methods. Paper presented at: 22th ESV Conference, June 13–16, 2011; Washington, DC.
- Kajzer, J., Schroeder, G., Ishikawa, H., Matsui, Y., Bosch, U. (1997) Shearing and bending effects at the knee joint at high speed lateral loading. Stapp Car Crash Conference, 41: pp.151–165.
- ISO/TR 9790 : Road Vehicles - Anthropomorphic Side Impact Dummy Lateral Impact Response Requirements to Assess the Biofidelity of the Dummy. Geneva, Switzerland: International Organization for Standardization (ISO); 2002.
- Kerrigan, J. R., et al. (2005) Kinematic Corridors for PMHS Tested in Full-Scale Pedestrian Impact Tests. Proceedings of the 19th International Technical Conference on the Enhanced Safety of Vehicles (ESV), 2005, Paper 05-0394.
- Kerrigan, J. R., Crandall, J. R., Deng, B. A. (2008a) Comparative Analysis of the Pedestrian Injury Risk Predicted by Mechanical Impactors and Post Mortem Human Surrogates. Stapp Car Crash Journal, 52: pp.527–567.
- Kerrigan, J. R., Rudd, R. W., Subit, D., Untaroiu, C. D., Crandall, J. R. (2008b) Pedestrian Lower Extremity Response and Injury: Small Sedan vs. Large SUV. SAE Transactions: Journal of Passenger Cars, 1(1): pp.985–1002. Based on SAE World Congress Paper 2008-01-1245.
- Pipkorn, B, et al. Development and Component Validation of a Generic Vehicle Front Buck for Pedestrian Impact Evaluation. Proceedings of IRCOBI Conference, 2014, Berlin, Germany.
- Song, E., Uriot, J., Potier, P., Dubois, D., Petit, P, Trosseille, X., Douard, R. (2017) New Reference PMHS Tests to Assess Whole-Body Pedestrian Impact Using a Simplified Generic Vehicle Front-End. Stapp Car Crash Journal, 61.
- Untaroiu, C. D., Putnam, J. B., Schap, J., Davis, M. L., Gayzik, F. (2015) Development and Preliminary Validation of a 50th Percentile Pedestrian Finite Element Model. ASME. International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Volume 3: 17th International Conference on Advanced Vehicle Technologies; 12th International Conference on Design Education; 8th Frontiers in Biomedical Devices:V003T01A004. doi:10.1115/DETC2015- 47781.